diff --git a/static/scripts/pack_scripts.py b/static/scripts/pack_scripts.py
index 0c77b3b8659..8cd56862ec2 100755
--- a/static/scripts/pack_scripts.py
+++ b/static/scripts/pack_scripts.py
@@ -11,6 +11,7 @@ from os import path
 do_not_pack = set()
 
 cmd = "java -jar ../../scripts/yuicompressor.jar --type js %(fname)s -o packed/%(fname)s"
+# cmd = "java -jar ../../scripts/compiler.jar --compilation_level SIMPLE_OPTIMIZATIONS --js %(fname)s --js_output_file packed/%(fname)s"
 
 # If specific scripts specified on command line, just pack them, otherwise pack
 # all.
diff --git a/static/scripts/packed/trackster.js b/static/scripts/packed/trackster.js
index 8f77ecc22e5..7c688254a99 100644
--- a/static/scripts/packed/trackster.js
+++ b/static/scripts/packed/trackster.js
@@ -1 +1 @@
-var DEBUG=false;var DENSITY=200,FEATURE_LEVELS=10,DATA_ERROR="There was an error in indexing this dataset. ",DATA_NOCONVERTER="A converter for this dataset is not installed. Please check your datatypes_conf.xml file.",DATA_NONE="No data for this chrom/contig.",DATA_PENDING="Currently indexing... please wait",DATA_LOADING="Loading data...",CACHED_TILES_FEATURE=10,CACHED_TILES_LINE=30,CACHED_DATA=5,CONTEXT=$("<canvas></canvas>").get(0).getContext("2d"),RIGHT_STRAND,LEFT_STRAND;var right_img=new Image();right_img.src="/static/images/visualization/strand_right.png";right_img.onload=function(){RIGHT_STRAND=CONTEXT.createPattern(right_img,"repeat")};var left_img=new Image();left_img.src="/static/images/visualization/strand_left.png";left_img.onload=function(){LEFT_STRAND=CONTEXT.createPattern(left_img,"repeat")};var right_img_inv=new Image();right_img_inv.src="/static/images/visualization/strand_right_inv.png";right_img_inv.onload=function(){RIGHT_STRAND_INV=CONTEXT.createPattern(right_img_inv,"repeat")};var left_img_inv=new Image();left_img_inv.src="/static/images/visualization/strand_left_inv.png";left_img_inv.onload=function(){LEFT_STRAND_INV=CONTEXT.createPattern(left_img_inv,"repeat")};function commatize(b){b+="";var a=/(\d+)(\d{3})/;while(a.test(b)){b=b.replace(a,"$1,$2")}return b}var Cache=function(a){this.num_elements=a;this.clear()};$.extend(Cache.prototype,{get:function(b){var a=this.key_ary.indexOf(b);if(a!=-1){this.key_ary.splice(a,1);this.key_ary.push(b)}return this.obj_cache[b]},set:function(b,c){if(!this.obj_cache[b]){if(this.key_ary.length>=this.num_elements){var a=this.key_ary.shift();delete this.obj_cache[a]}this.key_ary.push(b)}this.obj_cache[b]=c;return c},clear:function(){this.obj_cache={};this.key_ary=[]}});var Drawer=function(){};$.extend(Drawer.prototype,{intensity:function(b,a,c){},});drawer=new Drawer();var View=function(b,d,c,a){this.vis_id=c;this.dbkey=a;this.title=d;this.chrom=b;this.tracks=[];this.label_tracks=[];this.max_low=0;this.max_high=0;this.center=(this.max_high-this.max_low)/2;this.zoom_factor=3;this.zoom_level=0;this.track_id_counter=0;this.has_changes=false};$.extend(View.prototype,{add_track:function(a){a.view=this;a.track_id=this.track_id_counter;this.tracks.push(a);if(a.init){a.init()}a.container_div.attr("id","track_"+a.track_id);this.track_id_counter+=1},add_label_track:function(a){a.view=this;this.label_tracks.push(a)},remove_track:function(a){this.has_changes=true;a.container_div.fadeOut("slow",function(){$(this).remove()});delete this.tracks[this.tracks.indexOf(a)]},update_options:function(){this.has_changes=true;var b=$("ul#sortable-ul").sortable("toArray");for(var c in b){var e=b[c].split("_li")[0].split("track_")[1];$("#viewport").append($("#track_"+e))}for(var d in view.tracks){var a=view.tracks[d];if(a&&a.update_options){a.update_options(d)}}},reset:function(){this.low=this.max_low;this.high=this.max_high;this.center=this.center=(this.max_high-this.max_low)/2;this.zoom_level=0;$(".yaxislabel").remove()},redraw:function(f){this.span=this.max_high-this.max_low;var d=this.span/Math.pow(this.zoom_factor,this.zoom_level),b=this.center-(d/2),e=b+d;if(b<0){b=0;e=b+d}else{if(e>this.max_high){e=this.max_high;b=e-d}}this.low=Math.floor(b);this.high=Math.ceil(e);this.center=Math.round(this.low+(this.high-this.low)/2);this.resolution=Math.pow(10,Math.ceil(Math.log((this.high-this.low)/200)/Math.LN10));this.zoom_res=Math.pow(FEATURE_LEVELS,Math.max(0,Math.ceil(Math.log(this.resolution,FEATURE_LEVELS)/Math.log(FEATURE_LEVELS))));$("#overview-box").css({left:(this.low/this.span)*$("#overview-viewport").width(),width:Math.max(12,((this.high-this.low)/this.span)*$("#overview-viewport").width())}).show();$("#low").val(commatize(this.low));$("#high").val(commatize(this.high));if(!f){for(var c=0,a=this.tracks.length;c<a;c++){if(this.tracks[c]&&this.tracks[c].enabled){this.tracks[c].draw()}}for(var c=0,a=this.label_tracks.length;c<a;c++){this.label_tracks[c].draw()}}},zoom_in:function(a,b){if(this.max_high===0||this.high-this.low<30){return}if(a){this.center=a/b.width()*(this.high-this.low)+this.low}this.zoom_level+=1;this.redraw()},zoom_out:function(){if(this.max_high===0){return}if(this.zoom_level<=0){this.zoom_level=0;return}this.zoom_level-=1;this.redraw()}});var Track=function(a,b){this.name=a;this.parent_element=b;this.init_global()};$.extend(Track.prototype,{init_global:function(){this.header_div=$("<div class='track-header'>").text(this.name);this.content_div=$("<div class='track-content'>");this.container_div=$("<div />").addClass("track").append(this.header_div).append(this.content_div);this.parent_element.append(this.container_div)},init_each:function(c,b){var a=this;a.enabled=false;a.data_queue={};a.tile_cache.clear();a.data_cache.clear();a.content_div.css("height","30px");if(!a.content_div.text()){a.content_div.text(DATA_LOADING)}a.container_div.removeClass("nodata error pending");if(a.view.chrom){$.getJSON(data_url,c,function(d){if(!d||d==="error"||d.kind==="error"){a.container_div.addClass("error");a.content_div.text(DATA_ERROR);if(d.message){var f=a.view.tracks.indexOf(a);var e=$("<a href='javascript:void(0);'></a>").attr("id",f+"_error");e.text("Click to view error");$("#"+f+"_error").live("click",function(){show_modal("Trackster Error","<pre>"+d.message+"</pre>",{Close:hide_modal})});a.content_div.append(e)}}else{if(d==="no converter"){a.container_div.addClass("error");a.content_div.text(DATA_NOCONVERTER)}else{if(d.data!==undefined&&(d.data===null||d.data.length===0)){a.container_div.addClass("nodata");a.content_div.text(DATA_NONE)}else{if(d==="pending"){a.container_div.addClass("pending");a.content_div.text(DATA_PENDING);setTimeout(function(){a.init()},5000)}else{a.content_div.text("");a.content_div.css("height",a.height_px+"px");a.enabled=true;b(d);a.draw()}}}}})}else{a.container_div.addClass("nodata");a.content_div.text(DATA_NONE)}}});var TiledTrack=function(){};$.extend(TiledTrack.prototype,Track.prototype,{draw:function(){var i=this.view.low,e=this.view.high,f=e-i,d=this.view.resolution;if(DEBUG){$("#debug").text(d+" "+this.view.zoom_res)}var k=$("<div style='position: relative;'></div>"),l=this.content_div.width()/f,h;this.content_div.children(":first").remove();this.content_div.append(k),this.max_height=0;var a=Math.floor(i/d/DENSITY);while((a*DENSITY*d)<e){var j=this.content_div.width()+"_"+this.view.zoom_level+"_"+a;var c=this.tile_cache.get(j);if(c){var g=a*DENSITY*d;var b=(g-i)*l;if(this.left_offset){b-=this.left_offset}c.css({left:b});k.append(c);this.max_height=Math.max(this.max_height,c.height());this.content_div.css("height",this.max_height+"px")}else{this.delayed_draw(this,j,i,e,a,d,k,l)}a+=1}},delayed_draw:function(c,e,a,f,b,d,g,h){setTimeout(function(){if(!(a>c.view.high||f<c.view.low)){tile_element=c.draw_tile(d,b,g,h);if(tile_element){c.tile_cache.set(e,tile_element);c.max_height=Math.max(c.max_height,tile_element.height());c.content_div.css("height",c.max_height+"px")}}},50)}});var LabelTrack=function(a){Track.call(this,null,a);this.track_type="LabelTrack";this.hidden=true;this.container_div.addClass("label-track")};$.extend(LabelTrack.prototype,Track.prototype,{draw:function(){var c=this.view,d=c.high-c.low,g=Math.floor(Math.pow(10,Math.floor(Math.log(d)/Math.log(10)))),a=Math.floor(c.low/g)*g,e=this.content_div.width(),b=$("<div style='position: relative; height: 1.3em;'></div>");while(a<c.high){var f=(a-c.low)/d*e;b.append($("<div class='label'>"+commatize(a)+"</div>").css({position:"absolute",left:f-1}));a+=g}this.content_div.children(":first").remove();this.content_div.append(b)}});var LineTrack=function(c,a,b){this.track_type="LineTrack";Track.call(this,c,$("#viewport"));TiledTrack.call(this);this.height_px=100;this.dataset_id=a;this.data_cache=new Cache(CACHED_DATA);this.tile_cache=new Cache(CACHED_TILES_LINE);this.prefs={min_value:undefined,max_value:undefined,mode:"Line"};if(b.min_value!==undefined){this.prefs.min_value=b.min_value}if(b.max_value!==undefined){this.prefs.max_value=b.max_value}if(b.mode!==undefined){this.prefs.mode=b.mode}};$.extend(LineTrack.prototype,TiledTrack.prototype,{init:function(){var a=this,b=a.view.tracks.indexOf(a);a.vertical_range=undefined;this.init_each({stats:true,chrom:a.view.chrom,low:null,high:null,dataset_id:a.dataset_id},function(c){a.container_div.addClass("line-track");data=c.data;if(isNaN(parseFloat(a.prefs.min_value))||isNaN(parseFloat(a.prefs.max_value))){a.prefs.min_value=data.min;a.prefs.max_value=data.max;$("#track_"+b+"_minval").val(a.prefs.min_value);$("#track_"+b+"_maxval").val(a.prefs.max_value)}a.vertical_range=a.prefs.max_value-a.prefs.min_value;a.total_frequency=data.total_frequency;$("#linetrack_"+b+"_minval").remove();$("#linetrack_"+b+"_maxval").remove();var e=$("<div />").addClass("yaxislabel").attr("id","linetrack_"+b+"_minval").text(a.prefs.min_value);var d=$("<div />").addClass("yaxislabel").attr("id","linetrack_"+b+"_maxval").text(a.prefs.max_value);d.css({position:"relative",top:"25px",left:"10px"});d.prependTo(a.container_div);e.css({position:"relative",top:a.height_px+55+"px",left:"10px"});e.prependTo(a.container_div)})},get_data:function(d,b){var c=this,a=b*DENSITY*d,f=(b+1)*DENSITY*d,e=d+"_"+b;if(!c.data_queue[e]){c.data_queue[e]=true;$.ajax({url:data_url,dataType:"json",data:{chrom:this.view.chrom,low:a,high:f,dataset_id:this.dataset_id,resolution:this.view.resolution},success:function(g){data=g.data;c.data_cache.set(e,data);delete c.data_queue[e];c.draw()},error:function(h,g,i){console.log(h,g,i)}})}},draw_tile:function(p,r,c,e){if(this.vertical_range===undefined){return}var s=r*DENSITY*p,a=DENSITY*p,b=$("<canvas class='tile'></canvas>"),v=p+"_"+r;if(this.data_cache.get(v)===undefined){this.get_data(p,r);return}var j=this.data_cache.get(v);if(j===null){return}b.css({position:"absolute",top:0,left:(s-this.view.low)*e});b.get(0).width=Math.ceil(a*e);b.get(0).height=this.height_px;var o=b.get(0).getContext("2d"),k=false,l=this.prefs.min_value,g=this.prefs.max_value,n=this.vertical_range,t=this.total_frequency,d=this.height_px,m=this.prefs.mode;o.beginPath();if(data.length>1){var f=Math.ceil((data[1][0]-data[0][0])*e)}else{var f=10}var u,h;for(var q=0;q<data.length;q++){u=(data[q][0]-s)*e;h=data[q][1];if(m=="Intensity"){if(h===null){continue}if(h<=l){h=l}else{if(h>=g){h=g}}h=255-Math.floor((h-l)/n*255);o.fillStyle="rgb("+h+","+h+","+h+")";o.fillRect(u,0,f,this.height_px)}else{if(h===null){if(k&&m==="Filled"){o.lineTo(u,d)}k=false;continue}else{if(h<=l){h=l}else{if(h>=g){h=g}}h=Math.round(d-(h-l)/n*d);if(k){o.lineTo(u,h)}else{k=true;if(m==="Filled"){o.moveTo(u,d);o.lineTo(u,h)}else{o.moveTo(u,h)}}}}}if(m==="Filled"){if(k){o.lineTo(u,d)}o.fill()}else{o.stroke()}c.append(b);return b},gen_options:function(n){var a=$("<div />").addClass("form-row");var h="track_"+n+"_minval",k="track_"+n+"_maxval",e="track_"+n+"_mode",l=$("<label></label>").attr("for",h).text("Min value:"),b=(this.prefs.min_value===undefined?"":this.prefs.min_value),m=$("<input></input>").attr("id",h).val(b),g=$("<label></label>").attr("for",k).text("Max value:"),j=(this.prefs.max_value===undefined?"":this.prefs.max_value),f=$("<input></input>").attr("id",k).val(j),d=$("<label></label>").attr("for",e).text("Display mode:"),i=(this.prefs.mode===undefined?"Line":this.prefs.mode),c=$('<select id="'+e+'"><option value="Line" id="mode_Line">Line</option><option value="Filled" id="mode_Filled">Filled</option><option value="Intensity" id="mode_Intensity">Intensity</option></select>');c.children("#mode_"+i).attr("selected","selected");return a.append(l).append(m).append(g).append(f).append(d).append(c)},update_options:function(d){var a=$("#track_"+d+"_minval").val(),c=$("#track_"+d+"_maxval").val(),b=$("#track_"+d+"_mode option:selected").val();if(a!==this.prefs.min_value||c!==this.prefs.max_value||b!=this.prefs.mode){this.prefs.min_value=parseFloat(a);this.prefs.max_value=parseFloat(c);this.prefs.mode=b;this.vertical_range=this.prefs.max_value-this.prefs.min_value;$("#linetrack_"+d+"_minval").text(this.prefs.min_value);$("#linetrack_"+d+"_maxval").text(this.prefs.max_value);this.tile_cache.clear();this.draw()}}});var FeatureTrack=function(c,a,b){this.track_type="FeatureTrack";Track.call(this,c,$("#viewport"));TiledTrack.call(this);this.height_px=100;this.container_div.addClass("feature-track");this.dataset_id=a;this.zo_slots={};this.show_labels_scale=0.001;this.showing_details=false;this.vertical_detail_px=10;this.vertical_nodetail_px=3;this.default_font="9px Monaco, Lucida Console, monospace";this.left_offset=200;this.inc_slots={};this.data_queue={};this.s_e_by_tile={};this.tile_cache=new Cache(CACHED_TILES_FEATURE);this.data_cache=new Cache(20);this.prefs={block_color:"black",label_color:"black",show_counts:false};if(b.block_color!==undefined){this.prefs.block_color=b.block_color}if(b.label_color!==undefined){this.prefs.label_color=b.label_color}if(b.show_counts!==undefined){this.prefs.show_counts=b.show_counts}};$.extend(FeatureTrack.prototype,TiledTrack.prototype,{init:function(){var a=this,b=a.view.max_low+"_"+a.view.max_high;this.init_each({low:a.view.max_low,high:a.view.max_high,dataset_id:a.dataset_id,chrom:a.view.chrom,resolution:this.view.resolution},function(c){a.data_cache.set(b,c);a.draw()})},get_data:function(a,d){var b=this,c=a+"_"+d;if(!b.data_queue[c]){b.data_queue[c]=true;$.getJSON(data_url,{chrom:b.view.chrom,low:a,high:d,dataset_id:b.dataset_id,resolution:this.view.resolution},function(e){b.data_cache.set(c,e);delete b.data_queue[c];b.draw()})}},incremental_slots:function(a,g,c){if(!this.inc_slots[a]){this.inc_slots[a]={};this.inc_slots[a].w_scale=1/a;this.s_e_by_tile[a]={}}var m=this.inc_slots[a].w_scale,v=[],h=0,b=$("<canvas></canvas>").get(0).getContext("2d"),n=this.view.max_low;var d,f,x=[];for(var s=0,t=g.length;s<t;s++){var e=g[s],l=e[0];if(this.inc_slots[a][l]!==undefined){h=Math.max(h,this.inc_slots[a][l]);x.push(this.inc_slots[a][l])}else{v.push(s)}}for(var s=0,t=v.length;s<t;s++){var e=g[v[s]];l=e[0],feature_start=e[1],feature_end=e[2],feature_name=e[3];d=Math.floor((feature_start-n)*m);f=Math.ceil((feature_end-n)*m);if(!c){var p=b.measureText(feature_name).width;if(d-p<0){f+=p}else{d-=p}}var r=0;while(true){var o=true;if(this.s_e_by_tile[a][r]!==undefined){for(var q=0,w=this.s_e_by_tile[a][r].length;q<w;q++){var u=this.s_e_by_tile[a][r][q];if(f>u[0]&&d<u[1]){o=false;break}}}if(o){if(this.s_e_by_tile[a][r]===undefined){this.s_e_by_tile[a][r]=[]}this.s_e_by_tile[a][r].push([d,f]);this.inc_slots[a][l]=r;h=Math.max(h,r);break}r++}}return h},rect_or_text:function(n,o,g,f,m,b,d,k,e,i){n.textAlign="center";var j=Math.round(o/2);if(d!==undefined&&o>g){n.fillStyle=this.prefs.block_color;n.fillRect(k,i+1,e,9);n.fillStyle="#eee";for(var h=0,l=d.length;h<l;h++){if(b+h>=f&&b+h<=m){var a=Math.floor(Math.max(0,(b+h-f)*o));n.fillText(d[h],a+this.left_offset+j,i+9)}}}else{n.fillStyle=this.prefs.block_color;n.fillRect(k,i+4,e,3)}},draw_tile:function(W,h,m,ak){var D=h*DENSITY*W,ac=(h+1)*DENSITY*W,C=DENSITY*W;var aj,r;var ad=D+"_"+ac;var w=this.data_cache.get(ad);if(w===undefined){this.data_queue[[D,ac]]=true;this.get_data(D,ac);return}if(w.dataset_type==="summary_tree"){r=30}else{var U=(w.extra_info==="no_detail");var al=(U?this.vertical_nodetail_px:this.vertical_detail_px);r=this.incremental_slots(this.view.zoom_res,w.data,U)*al+15;m.parent().css("height",Math.max(this.height_px,r)+"px");aj=this.inc_slots[this.view.zoom_res]}var a=Math.ceil(C*ak),K=$("<canvas class='tile'></canvas>"),Y=this.prefs.label_color,f=this.prefs.block_color,O=this.left_offset;K.css({position:"absolute",top:0,left:(D-this.view.low)*ak-O});K.get(0).width=a+O;K.get(0).height=r;var z=K.get(0).getContext("2d"),ah=z.measureText("A").width;z.fillStyle=f;z.font=this.default_font;z.textAlign="right";if(w.dataset_type=="summary_tree"){var J,G=55,ab=255-G,g=ab*2/3,Q=w.data,B=w.max,l=w.avg;if(Q.length>2){var b=Math.ceil((Q[1][0]-Q[0][0])*ak)}else{var b=50}for(var af=0,v=Q.length;af<v;af++){var S=Math.ceil((Q[af][0]-D)*ak);var R=Q[af][1];if(!R){continue}J=Math.floor(ab-(R/B)*ab);z.fillStyle="rgb("+J+","+J+","+J+")";z.fillRect(S+O,0,b,20);if(this.prefs.show_counts){if(J>g){z.fillStyle="black"}else{z.fillStyle="#ddd"}z.textAlign="center";z.fillText(Q[af][1],S+O+(b/2),12)}}m.append(K);return K}var ai=w.data;var ae=0;for(var af=0,v=ai.length;af<v;af++){var L=ai[af],I=L[0],ag=L[1],T=L[2],E=L[3];if(ag<=ac&&T>=D){var V=Math.floor(Math.max(0,(ag-D)*ak)),A=Math.ceil(Math.min(a,Math.max(0,(T-D)*ak))),P=aj[I]*al;if(w.dataset_type==="bai"){z.fillStyle=f;if(L[4] instanceof Array){var s=Math.floor(Math.max(0,(L[4][0]-D)*ak)),H=Math.ceil(Math.min(a,Math.max(0,(L[4][1]-D)*ak))),q=Math.floor(Math.max(0,(L[5][0]-D)*ak)),o=Math.ceil(Math.min(a,Math.max(0,(L[5][1]-D)*ak)));if(L[4][1]>=D&&L[4][0]<=ac){this.rect_or_text(z,ak,ah,D,ac,L[4][0],L[4][2],s+O,H-s,P)}if(L[5][1]>=D&&L[5][0]<=ac){this.rect_or_text(z,ak,ah,D,ac,L[5][0],L[5][2],q+O,o-q,P)}if(q>H){z.fillStyle="#999";z.fillRect(H+O,P+5,q-H,1)}}else{z.fillStyle=f;this.rect_or_text(z,ak,ah,D,ac,ag,E,V+O,A-V,P)}if(!U&&ag>D){z.fillStyle=this.prefs.label_color;if(h===0&&V-z.measureText(E).width<0){z.textAlign="left";z.fillText(I,A+2+O,P+8)}else{z.textAlign="right";z.fillText(I,V-2+O,P+8)}z.fillStyle=f}}else{if(w.dataset_type==="interval_index"){if(U){z.fillRect(V+O,P+5,A-V,1)}else{var u=L[4],N=L[5],X=L[6],e=L[7];var t,Z,F=null,am=null;if(N&&X){F=Math.floor(Math.max(0,(N-D)*ak));am=Math.ceil(Math.min(a,Math.max(0,(X-D)*ak)))}if(E!==undefined&&ag>D){z.fillStyle=Y;if(h===0&&V-z.measureText(E).width<0){z.textAlign="left";z.fillText(E,A+2+O,P+8)}else{z.textAlign="right";z.fillText(E,V-2+O,P+8)}z.fillStyle=f}if(e){if(u){if(u=="+"){z.fillStyle=RIGHT_STRAND}else{if(u=="-"){z.fillStyle=LEFT_STRAND}}z.fillRect(V+O,P,A-V,10);z.fillStyle=f}for(var ad=0,d=e.length;ad<d;ad++){var n=e[ad],c=Math.floor(Math.max(0,(n[0]-D)*ak)),M=Math.ceil(Math.min(a,Math.max((n[1]-D)*ak)));if(c>M){continue}t=5;Z=3;z.fillRect(c+O,P+Z,M-c,t);if(F!==undefined&&!(c>am||M<F)){t=9;Z=1;var aa=Math.max(c,F),p=Math.min(M,am);z.fillRect(aa+O,P+Z,p-aa,t)}}}else{t=9;Z=1;z.fillRect(V+O,P+Z,A-V,t);if(L.strand){if(L.strand=="+"){z.fillStyle=RIGHT_STRAND_INV}else{if(L.strand=="-"){z.fillStyle=LEFT_STRAND_INV}}z.fillRect(V+O,P,A-V,10);z.fillStyle=prefs.block_color}}}}}ae++}}m.append(K);return K},gen_options:function(i){var a=$("<div />").addClass("form-row");var e="track_"+i+"_block_color",k=$("<label />").attr("for",e).text("Block color:"),l=$("<input />").attr("id",e).attr("name",e).val(this.prefs.block_color),j="track_"+i+"_label_color",g=$("<label />").attr("for",j).text("Text color:"),h=$("<input />").attr("id",j).attr("name",j).val(this.prefs.label_color),f="track_"+i+"_show_count",c=$("<label />").attr("for",f).text("Show summary counts"),b=$('<input type="checkbox" style="float:left;"></input>').attr("id",f).attr("name",f).attr("checked",this.prefs.show_counts),d=$("<div />").append(b).append(c);return a.append(k).append(l).append(g).append(h).append(d)},update_options:function(d){var b=$("#track_"+d+"_block_color").val(),c=$("#track_"+d+"_label_color").val(),a=$("#track_"+d+"_show_count").attr("checked");if(b!==this.prefs.block_color||c!==this.prefs.label_color||a!=this.prefs.show_counts){this.prefs.block_color=b;this.prefs.label_color=c;this.prefs.show_counts=a;this.tile_cache.clear();this.draw()}}});var ReadTrack=function(c,a,b){FeatureTrack.call(this,c,a,b);this.track_type="ReadTrack";this.vertical_detail_px=10;this.vertical_nodetail_px=5};$.extend(ReadTrack.prototype,TiledTrack.prototype,FeatureTrack.prototype,{});
\ No newline at end of file
+var DEBUG=false;var DENSITY=200,FEATURE_LEVELS=10,DATA_ERROR="There was an error in indexing this dataset. ",DATA_NOCONVERTER="A converter for this dataset is not installed. Please check your datatypes_conf.xml file.",DATA_NONE="No data for this chrom/contig.",DATA_PENDING="Currently indexing... please wait",DATA_LOADING="Loading data...",CACHED_TILES_FEATURE=10,CACHED_TILES_LINE=30,CACHED_DATA=5,CONTEXT=$("<canvas></canvas>").get(0).getContext("2d"),RIGHT_STRAND,LEFT_STRAND;var right_img=new Image();right_img.src="/static/images/visualization/strand_right.png";right_img.onload=function(){RIGHT_STRAND=CONTEXT.createPattern(right_img,"repeat")};var left_img=new Image();left_img.src="/static/images/visualization/strand_left.png";left_img.onload=function(){LEFT_STRAND=CONTEXT.createPattern(left_img,"repeat")};var right_img_inv=new Image();right_img_inv.src="/static/images/visualization/strand_right_inv.png";right_img_inv.onload=function(){RIGHT_STRAND_INV=CONTEXT.createPattern(right_img_inv,"repeat")};var left_img_inv=new Image();left_img_inv.src="/static/images/visualization/strand_left_inv.png";left_img_inv.onload=function(){LEFT_STRAND_INV=CONTEXT.createPattern(left_img_inv,"repeat")};function commatize(b){b+="";var a=/(\d+)(\d{3})/;while(a.test(b)){b=b.replace(a,"$1,$2")}return b}var Cache=function(a){this.num_elements=a;this.clear()};$.extend(Cache.prototype,{get:function(b){var a=this.key_ary.indexOf(b);if(a!=-1){this.key_ary.splice(a,1);this.key_ary.push(b)}return this.obj_cache[b]},set:function(b,c){if(!this.obj_cache[b]){if(this.key_ary.length>=this.num_elements){var a=this.key_ary.shift();delete this.obj_cache[a]}this.key_ary.push(b)}this.obj_cache[b]=c;return c},clear:function(){this.obj_cache={};this.key_ary=[]}});var View=function(b,d,c,a){this.vis_id=c;this.dbkey=a;this.title=d;this.chrom=b;this.tracks=[];this.label_tracks=[];this.max_low=0;this.max_high=0;this.center=(this.max_high-this.max_low)/2;this.zoom_factor=3;this.zoom_level=0;this.track_id_counter=0;this.has_changes=false};$.extend(View.prototype,{add_track:function(a){a.view=this;a.track_id=this.track_id_counter;this.tracks.push(a);if(a.init){a.init()}a.container_div.attr("id","track_"+a.track_id);this.track_id_counter+=1},add_label_track:function(a){a.view=this;this.label_tracks.push(a)},remove_track:function(a){this.has_changes=true;a.container_div.fadeOut("slow",function(){$(this).remove()});delete this.tracks[this.tracks.indexOf(a)]},update_options:function(){this.has_changes=true;var b=$("ul#sortable-ul").sortable("toArray");for(var c in b){var e=b[c].split("_li")[0].split("track_")[1];$("#viewport").append($("#track_"+e))}for(var d in view.tracks){var a=view.tracks[d];if(a&&a.update_options){a.update_options(d)}}},reset:function(){this.low=this.max_low;this.high=this.max_high;this.center=this.center=(this.max_high-this.max_low)/2;this.zoom_level=0;$(".yaxislabel").remove()},redraw:function(f){this.span=this.max_high-this.max_low;var d=this.span/Math.pow(this.zoom_factor,this.zoom_level),b=this.center-(d/2),e=b+d;if(b<0){b=0;e=b+d}else{if(e>this.max_high){e=this.max_high;b=e-d}}this.low=Math.floor(b);this.high=Math.ceil(e);this.center=Math.round(this.low+(this.high-this.low)/2);this.resolution=Math.pow(10,Math.ceil(Math.log((this.high-this.low)/200)/Math.LN10));this.zoom_res=Math.pow(FEATURE_LEVELS,Math.max(0,Math.ceil(Math.log(this.resolution,FEATURE_LEVELS)/Math.log(FEATURE_LEVELS))));$("#overview-box").css({left:(this.low/this.span)*$("#overview-viewport").width(),width:Math.max(12,((this.high-this.low)/this.span)*$("#overview-viewport").width())}).show();$("#low").val(commatize(this.low));$("#high").val(commatize(this.high));if(!f){for(var c=0,a=this.tracks.length;c<a;c++){if(this.tracks[c]&&this.tracks[c].enabled){this.tracks[c].draw()}}for(var c=0,a=this.label_tracks.length;c<a;c++){this.label_tracks[c].draw()}}},zoom_in:function(a,b){if(this.max_high===0||this.high-this.low<30){return}if(a){this.center=a/b.width()*(this.high-this.low)+this.low}this.zoom_level+=1;this.redraw()},zoom_out:function(){if(this.max_high===0){return}if(this.zoom_level<=0){this.zoom_level=0;return}this.zoom_level-=1;this.redraw()}});var Track=function(a,b){this.name=a;this.parent_element=b;this.init_global()};$.extend(Track.prototype,{init_global:function(){this.header_div=$("<div class='track-header'>").text(this.name);this.content_div=$("<div class='track-content'>");this.container_div=$("<div />").addClass("track").append(this.header_div).append(this.content_div);this.parent_element.append(this.container_div)},init_each:function(c,b){var a=this;a.enabled=false;a.data_queue={};a.tile_cache.clear();a.data_cache.clear();a.content_div.css("height","30px");if(!a.content_div.text()){a.content_div.text(DATA_LOADING)}a.container_div.removeClass("nodata error pending");if(a.view.chrom){$.getJSON(data_url,c,function(d){if(!d||d==="error"||d.kind==="error"){a.container_div.addClass("error");a.content_div.text(DATA_ERROR);if(d.message){var f=a.view.tracks.indexOf(a);var e=$("<a href='javascript:void(0);'></a>").attr("id",f+"_error");e.text("Click to view error");$("#"+f+"_error").live("click",function(){show_modal("Trackster Error","<pre>"+d.message+"</pre>",{Close:hide_modal})});a.content_div.append(e)}}else{if(d==="no converter"){a.container_div.addClass("error");a.content_div.text(DATA_NOCONVERTER)}else{if(d.data!==undefined&&(d.data===null||d.data.length===0)){a.container_div.addClass("nodata");a.content_div.text(DATA_NONE)}else{if(d==="pending"){a.container_div.addClass("pending");a.content_div.text(DATA_PENDING);setTimeout(function(){a.init()},5000)}else{a.content_div.text("");a.content_div.css("height",a.height_px+"px");a.enabled=true;b(d);a.draw()}}}}})}else{a.container_div.addClass("nodata");a.content_div.text(DATA_NONE)}}});var TiledTrack=function(){};$.extend(TiledTrack.prototype,Track.prototype,{draw:function(){var i=this.view.low,e=this.view.high,f=e-i,d=this.view.resolution;if(DEBUG){$("#debug").text(d+" "+this.view.zoom_res)}var k=$("<div style='position: relative;'></div>"),l=this.content_div.width()/f,h;this.content_div.children(":first").remove();this.content_div.append(k),this.max_height=0;var a=Math.floor(i/d/DENSITY);while((a*DENSITY*d)<e){var j=this.content_div.width()+"_"+this.view.zoom_level+"_"+a;var c=this.tile_cache.get(j);if(c){var g=a*DENSITY*d;var b=(g-i)*l;if(this.left_offset){b-=this.left_offset}c.css({left:b});k.append(c);this.max_height=Math.max(this.max_height,c.height());this.content_div.css("height",this.max_height+"px")}else{this.delayed_draw(this,j,i,e,a,d,k,l)}a+=1}},delayed_draw:function(c,e,a,f,b,d,g,h){setTimeout(function(){if(!(a>c.view.high||f<c.view.low)){tile_element=c.draw_tile(d,b,g,h);if(tile_element){c.tile_cache.set(e,tile_element);c.max_height=Math.max(c.max_height,tile_element.height());c.content_div.css("height",c.max_height+"px")}}},50)}});var LabelTrack=function(a){Track.call(this,null,a);this.track_type="LabelTrack";this.hidden=true;this.container_div.addClass("label-track")};$.extend(LabelTrack.prototype,Track.prototype,{draw:function(){var c=this.view,d=c.high-c.low,g=Math.floor(Math.pow(10,Math.floor(Math.log(d)/Math.log(10)))),a=Math.floor(c.low/g)*g,e=this.content_div.width(),b=$("<div style='position: relative; height: 1.3em;'></div>");while(a<c.high){var f=(a-c.low)/d*e;b.append($("<div class='label'>"+commatize(a)+"</div>").css({position:"absolute",left:f-1}));a+=g}this.content_div.children(":first").remove();this.content_div.append(b)}});var LineTrack=function(c,a,b){this.track_type="LineTrack";Track.call(this,c,$("#viewport"));TiledTrack.call(this);this.height_px=100;this.dataset_id=a;this.data_cache=new Cache(CACHED_DATA);this.tile_cache=new Cache(CACHED_TILES_LINE);this.prefs={min_value:undefined,max_value:undefined,mode:"Line"};if(b.min_value!==undefined){this.prefs.min_value=b.min_value}if(b.max_value!==undefined){this.prefs.max_value=b.max_value}if(b.mode!==undefined){this.prefs.mode=b.mode}};$.extend(LineTrack.prototype,TiledTrack.prototype,{init:function(){var a=this,b=a.view.tracks.indexOf(a);a.vertical_range=undefined;this.init_each({stats:true,chrom:a.view.chrom,low:null,high:null,dataset_id:a.dataset_id},function(c){a.container_div.addClass("line-track");data=c.data;if(isNaN(parseFloat(a.prefs.min_value))||isNaN(parseFloat(a.prefs.max_value))){a.prefs.min_value=data.min;a.prefs.max_value=data.max;$("#track_"+b+"_minval").val(a.prefs.min_value);$("#track_"+b+"_maxval").val(a.prefs.max_value)}a.vertical_range=a.prefs.max_value-a.prefs.min_value;a.total_frequency=data.total_frequency;$("#linetrack_"+b+"_minval").remove();$("#linetrack_"+b+"_maxval").remove();var e=$("<div />").addClass("yaxislabel").attr("id","linetrack_"+b+"_minval").text(a.prefs.min_value);var d=$("<div />").addClass("yaxislabel").attr("id","linetrack_"+b+"_maxval").text(a.prefs.max_value);d.css({position:"relative",top:"25px",left:"10px"});d.prependTo(a.container_div);e.css({position:"relative",top:a.height_px+55+"px",left:"10px"});e.prependTo(a.container_div)})},get_data:function(d,b){var c=this,a=b*DENSITY*d,f=(b+1)*DENSITY*d,e=d+"_"+b;if(!c.data_queue[e]){c.data_queue[e]=true;$.ajax({url:data_url,dataType:"json",data:{chrom:this.view.chrom,low:a,high:f,dataset_id:this.dataset_id,resolution:this.view.resolution},success:function(g){data=g.data;c.data_cache.set(e,data);delete c.data_queue[e];c.draw()},error:function(h,g,i){console.log(h,g,i)}})}},draw_tile:function(p,r,c,e){if(this.vertical_range===undefined){return}var s=r*DENSITY*p,a=DENSITY*p,b=$("<canvas class='tile'></canvas>"),v=p+"_"+r;if(this.data_cache.get(v)===undefined){this.get_data(p,r);return}var j=this.data_cache.get(v);if(j===null){return}b.css({position:"absolute",top:0,left:(s-this.view.low)*e});b.get(0).width=Math.ceil(a*e);b.get(0).height=this.height_px;var o=b.get(0).getContext("2d"),k=false,l=this.prefs.min_value,g=this.prefs.max_value,n=this.vertical_range,t=this.total_frequency,d=this.height_px,m=this.prefs.mode;o.beginPath();if(data.length>1){var f=Math.ceil((data[1][0]-data[0][0])*e)}else{var f=10}var u,h;for(var q=0;q<data.length;q++){u=(data[q][0]-s)*e;h=data[q][1];if(m=="Intensity"){if(h===null){continue}if(h<=l){h=l}else{if(h>=g){h=g}}h=255-Math.floor((h-l)/n*255);o.fillStyle="rgb("+h+","+h+","+h+")";o.fillRect(u,0,f,this.height_px)}else{if(h===null){if(k&&m==="Filled"){o.lineTo(u,d)}k=false;continue}else{if(h<=l){h=l}else{if(h>=g){h=g}}h=Math.round(d-(h-l)/n*d);if(k){o.lineTo(u,h)}else{k=true;if(m==="Filled"){o.moveTo(u,d);o.lineTo(u,h)}else{o.moveTo(u,h)}}}}}if(m==="Filled"){if(k){o.lineTo(u,d)}o.fill()}else{o.stroke()}c.append(b);return b},gen_options:function(n){var a=$("<div />").addClass("form-row");var h="track_"+n+"_minval",l=$("<label></label>").attr("for",h).text("Min value:"),b=(this.prefs.min_value===undefined?"":this.prefs.min_value),m=$("<input></input>").attr("id",h).val(b),k="track_"+n+"_maxval",g=$("<label></label>").attr("for",k).text("Max value:"),j=(this.prefs.max_value===undefined?"":this.prefs.max_value),f=$("<input></input>").attr("id",k).val(j),e="track_"+n+"_mode",d=$("<label></label>").attr("for",e).text("Display mode:"),i=(this.prefs.mode===undefined?"Line":this.prefs.mode),c=$('<select id="'+e+'"><option value="Line" id="mode_Line">Line</option><option value="Filled" id="mode_Filled">Filled</option><option value="Intensity" id="mode_Intensity">Intensity</option></select>');c.children("#mode_"+i).attr("selected","selected");return a.append(l).append(m).append(g).append(f).append(d).append(c)},update_options:function(d){var a=$("#track_"+d+"_minval").val(),c=$("#track_"+d+"_maxval").val(),b=$("#track_"+d+"_mode option:selected").val();if(a!==this.prefs.min_value||c!==this.prefs.max_value||b!==this.prefs.mode){this.prefs.min_value=parseFloat(a);this.prefs.max_value=parseFloat(c);this.prefs.mode=b;this.vertical_range=this.prefs.max_value-this.prefs.min_value;$("#linetrack_"+d+"_minval").text(this.prefs.min_value);$("#linetrack_"+d+"_maxval").text(this.prefs.max_value);this.tile_cache.clear();this.draw()}}});var FeatureTrack=function(c,a,b){this.track_type="FeatureTrack";Track.call(this,c,$("#viewport"));TiledTrack.call(this);this.height_px=100;this.container_div.addClass("feature-track");this.dataset_id=a;this.zo_slots={};this.show_labels_scale=0.001;this.showing_details=false;this.vertical_detail_px=10;this.vertical_nodetail_px=3;this.default_font="9px Monaco, Lucida Console, monospace";this.left_offset=200;this.inc_slots={};this.data_queue={};this.s_e_by_tile={};this.tile_cache=new Cache(CACHED_TILES_FEATURE);this.data_cache=new Cache(20);this.prefs={block_color:"black",label_color:"black",show_counts:false};if(b.block_color!==undefined){this.prefs.block_color=b.block_color}if(b.label_color!==undefined){this.prefs.label_color=b.label_color}if(b.show_counts!==undefined){this.prefs.show_counts=b.show_counts}};$.extend(FeatureTrack.prototype,TiledTrack.prototype,{init:function(){var a=this,b=a.view.max_low+"_"+a.view.max_high;a.mode="Auto";if(a.mode_div){a.mode_div.remove()}this.init_each({low:a.view.max_low,high:a.view.max_high,dataset_id:a.dataset_id,chrom:a.view.chrom,resolution:this.view.resolution},function(d){a.mode_div=$("<div class='right-float menubutton popup' />").text("Display Mode");a.header_div.append(a.mode_div);a.mode="Auto";var c=function(e){a.mode_div.text(e);a.mode=e;a.tile_cache.clear();a.draw()};make_popupmenu(a.mode_div,{Auto:function(){c("Auto")},Dense:function(){c("Dense")},Squish:function(){c("Squish")},Pack:function(){c("Pack")}});a.data_cache.set(b,d);a.draw()})},get_data:function(a,d){var b=this,c=a+"_"+d;if(!b.data_queue[c]){b.data_queue[c]=true;$.getJSON(data_url,{chrom:b.view.chrom,low:a,high:d,dataset_id:b.dataset_id,resolution:this.view.resolution,mode:this.mode},function(e){b.data_cache.set(c,e);delete b.data_queue[c];b.draw()})}},incremental_slots:function(a,h,c,r){if(!this.inc_slots[a]){this.inc_slots[a]={};this.inc_slots[a].w_scale=1/a;this.inc_slots[a].mode=r;this.s_e_by_tile[a]={}}var n=this.inc_slots[a].w_scale,z=[],l=0,b=$("<canvas></canvas>").get(0).getContext("2d"),o=this.view.max_low;var B=[];if(this.inc_slots[a].mode!==r){delete this.inc_slots[a];this.inc_slots[a]={mode:r,w_scale:n};delete this.s_e_by_tile[a];this.s_e_by_tile[a]={}}for(var w=0,x=h.length;w<x;w++){var g=h[w],m=g[0];if(this.inc_slots[a][m]!==undefined){l=Math.max(l,this.inc_slots[a][m]);B.push(this.inc_slots[a][m])}else{z.push(w)}}for(var w=0,x=z.length;w<x;w++){var g=h[z[w]],m=g[0],s=g[1],d=g[2],q=g[3],e=Math.floor((s-o)*n),f=Math.ceil((d-o)*n);if(q!==undefined&&!c){var t=b.measureText(q).width;if(e-t<0){f+=t}else{e-=t}}var v=0;while(true){var p=true;if(this.s_e_by_tile[a][v]!==undefined){for(var u=0,A=this.s_e_by_tile[a][v].length;u<A;u++){var y=this.s_e_by_tile[a][v][u];if(f>y[0]&&e<y[1]){p=false;break}}}if(p){if(this.s_e_by_tile[a][v]===undefined){this.s_e_by_tile[a][v]=[]}this.s_e_by_tile[a][v].push([e,f]);this.inc_slots[a][m]=v;l=Math.max(l,v);break}v++}}return l},rect_or_text:function(n,o,g,f,m,b,d,k,e,i){n.textAlign="center";var j=Math.round(o/2);if((this.mode==="Pack"||this.mode==="Auto")&&d!==undefined&&o>g){n.fillStyle=this.prefs.block_color;n.fillRect(k,i+1,e,9);n.fillStyle="#eee";for(var h=0,l=d.length;h<l;h++){if(b+h>=f&&b+h<=m){var a=Math.floor(Math.max(0,(b+h-f)*o));n.fillText(d[h],a+this.left_offset+j,i+9)}}}else{n.fillStyle=this.prefs.block_color;n.fillRect(k,i+4,e,3)}},draw_tile:function(X,h,n,al){var E=h*DENSITY*X,ad=(h+1)*DENSITY*X,D=DENSITY*X;var ae=E+"_"+ad;var z=this.data_cache.get(ae);if(z===undefined){this.data_queue[[E,ad]]=true;this.get_data(E,ad);return}var a=Math.ceil(D*al),L=$("<canvas class='tile'></canvas>"),Z=this.prefs.label_color,f=this.prefs.block_color,m=this.mode,V=(m==="Squish")||(m==="Dense")&&(m!=="Pack")||(m==="Auto"&&(z.extra_info==="no_detail")),P=this.left_offset,ak,s,am;if(z.dataset_type==="summary_tree"){s=30}else{if(m==="Dense"){s=15;am=10}else{am=(V?this.vertical_nodetail_px:this.vertical_detail_px);s=this.incremental_slots(this.view.zoom_res,z.data,V,m)*am+15;ak=this.inc_slots[this.view.zoom_res]}}L.css({position:"absolute",top:0,left:(E-this.view.low)*al-P});L.get(0).width=a+P;L.get(0).height=s;n.parent().css("height",Math.max(this.height_px,s)+"px");var A=L.get(0).getContext("2d"),ai=A.measureText("A").width;A.fillStyle=f;A.font=this.default_font;A.textAlign="right";if(z.dataset_type=="summary_tree"){var K,H=55,ac=255-H,g=ac*2/3,R=z.data,C=z.max,l=z.avg;if(R.length>2){var b=Math.ceil((R[1][0]-R[0][0])*al)}else{var b=50}for(var ag=0,w=R.length;ag<w;ag++){var T=Math.ceil((R[ag][0]-E)*al);var S=R[ag][1];if(!S){continue}K=Math.floor(ac-(S/C)*ac);A.fillStyle="rgb("+K+","+K+","+K+")";A.fillRect(T+P,0,b,20);if(this.prefs.show_counts){if(K>g){A.fillStyle="black"}else{A.fillStyle="#ddd"}A.textAlign="center";A.fillText(R[ag][1],T+P+(b/2),12)}}n.append(L);return L}var aj=z.data;var af=0;for(var ag=0,w=aj.length;ag<w;ag++){var M=aj[ag],J=M[0],ah=M[1],U=M[2],F=M[3];if(ah<=ad&&U>=E){var W=Math.floor(Math.max(0,(ah-E)*al)),B=Math.ceil(Math.min(a,Math.max(0,(U-E)*al))),Q=(m==="Dense"?0:ak[J]*am);if(z.dataset_type==="bai"){A.fillStyle=f;if(M[4] instanceof Array){var t=Math.floor(Math.max(0,(M[4][0]-E)*al)),I=Math.ceil(Math.min(a,Math.max(0,(M[4][1]-E)*al))),r=Math.floor(Math.max(0,(M[5][0]-E)*al)),p=Math.ceil(Math.min(a,Math.max(0,(M[5][1]-E)*al)));if(M[4][1]>=E&&M[4][0]<=ad){this.rect_or_text(A,al,ai,E,ad,M[4][0],M[4][2],t+P,I-t,Q)}if(M[5][1]>=E&&M[5][0]<=ad){this.rect_or_text(A,al,ai,E,ad,M[5][0],M[5][2],r+P,p-r,Q)}if(r>I){A.fillStyle="#999";A.fillRect(I+P,Q+5,r-I,1)}}else{A.fillStyle=f;this.rect_or_text(A,al,ai,E,ad,ah,F,W+P,B-W,Q)}if(m!=="Dense"&&!V&&ah>E){A.fillStyle=this.prefs.label_color;if(h===0&&W-A.measureText(F).width<0){A.textAlign="left";A.fillText(J,B+2+P,Q+8)}else{A.textAlign="right";A.fillText(J,W-2+P,Q+8)}A.fillStyle=f}}else{if(z.dataset_type==="interval_index"){if(V){A.fillRect(W+P,Q+5,B-W,1)}else{var v=M[4],O=M[5],Y=M[6],e=M[7];var u,aa,G=null,an=null;if(O&&Y){G=Math.floor(Math.max(0,(O-E)*al));an=Math.ceil(Math.min(a,Math.max(0,(Y-E)*al)))}if(m!=="Dense"&&F!==undefined&&ah>E){A.fillStyle=Z;if(h===0&&W-A.measureText(F).width<0){A.textAlign="left";A.fillText(F,B+2+P,Q+8)}else{A.textAlign="right";A.fillText(F,W-2+P,Q+8)}A.fillStyle=f}if(e){if(v){if(v=="+"){A.fillStyle=RIGHT_STRAND}else{if(v=="-"){A.fillStyle=LEFT_STRAND}}A.fillRect(W+P,Q,B-W,10);A.fillStyle=f}for(var ae=0,d=e.length;ae<d;ae++){var o=e[ae],c=Math.floor(Math.max(0,(o[0]-E)*al)),N=Math.ceil(Math.min(a,Math.max((o[1]-E)*al)));if(c>N){continue}u=5;aa=3;A.fillRect(c+P,Q+aa,N-c,u);if(G!==undefined&&!(c>an||N<G)){u=9;aa=1;var ab=Math.max(c,G),q=Math.min(N,an);A.fillRect(ab+P,Q+aa,q-ab,u)}}}else{u=9;aa=1;A.fillRect(W+P,Q+aa,B-W,u);if(M.strand){if(M.strand=="+"){A.fillStyle=RIGHT_STRAND_INV}else{if(M.strand=="-"){A.fillStyle=LEFT_STRAND_INV}}A.fillRect(W+P,Q,B-W,10);A.fillStyle=prefs.block_color}}}}}af++}}n.append(L);return L},gen_options:function(i){var a=$("<div />").addClass("form-row");var e="track_"+i+"_block_color",k=$("<label />").attr("for",e).text("Block color:"),l=$("<input />").attr("id",e).attr("name",e).val(this.prefs.block_color),j="track_"+i+"_label_color",g=$("<label />").attr("for",j).text("Text color:"),h=$("<input />").attr("id",j).attr("name",j).val(this.prefs.label_color),f="track_"+i+"_show_count",c=$("<label />").attr("for",f).text("Show summary counts"),b=$('<input type="checkbox" style="float:left;"></input>').attr("id",f).attr("name",f).attr("checked",this.prefs.show_counts),d=$("<div />").append(b).append(c);return a.append(k).append(l).append(g).append(h).append(d)},update_options:function(e){var b=$("#track_"+e+"_block_color").val(),d=$("#track_"+e+"_label_color").val(),c=$("#track_"+e+"_mode option:selected").val(),a=$("#track_"+e+"_show_count").attr("checked");if(b!==this.prefs.block_color||d!==this.prefs.label_color||a!==this.prefs.show_counts){this.prefs.block_color=b;this.prefs.label_color=d;this.prefs.show_counts=a;this.tile_cache.clear();this.draw()}}});var ReadTrack=function(c,a,b){FeatureTrack.call(this,c,a,b);this.track_type="ReadTrack";this.vertical_detail_px=10;this.vertical_nodetail_px=5};$.extend(ReadTrack.prototype,TiledTrack.prototype,FeatureTrack.prototype,{});
\ No newline at end of file
diff --git a/static/scripts/trackster.js b/static/scripts/trackster.js
index b81458c049a..95c9187368a 100644
--- a/static/scripts/trackster.js
+++ b/static/scripts/trackster.js
@@ -78,17 +78,6 @@ $.extend( Cache.prototype, {
     }
 });
 
-var Drawer = function() {};
-$.extend( Drawer.prototype, {
-    intensity: function(ctx, max, data) {
-        
-        
-    },
-    
-});
-
-drawer = new Drawer();
-    
 var View = function( chrom, title, vis_id, dbkey ) {
     this.vis_id = vis_id;
     this.dbkey = dbkey;
@@ -543,14 +532,14 @@ $.extend( LineTrack.prototype, TiledTrack.prototype, {
         var container = $("<div />").addClass("form-row");
         
         var minval = 'track_' + track_id + '_minval',
-            maxval = 'track_' + track_id + '_maxval',
-            mode = 'track_' + track_id + '_mode',
             min_label = $('<label></label>').attr("for", minval).text("Min value:"),
             min_val = (this.prefs.min_value === undefined ? "" : this.prefs.min_value),
             min_input = $('<input></input>').attr("id", minval).val(min_val),
+            maxval = 'track_' + track_id + '_maxval',
             max_label = $('<label></label>').attr("for", maxval).text("Max value:"),
             max_val = (this.prefs.max_value === undefined ? "" : this.prefs.max_value),
             max_input = $('<input></input>').attr("id", maxval).val(max_val),
+            mode = 'track_' + track_id + '_mode',
             mode_label = $('<label></label>').attr("for", mode).text("Display mode:"),
             mode_val = (this.prefs.mode === undefined ? "Line" : this.prefs.mode),
             mode_input = $('<select id="' +mode+ '"><option value="Line" id="mode_Line">Line</option><option value="Filled" id="mode_Filled">Filled</option><option value="Intensity" id="mode_Intensity">Intensity</option></select>');
@@ -562,7 +551,7 @@ $.extend( LineTrack.prototype, TiledTrack.prototype, {
         var min_value = $('#track_' + track_id + '_minval').val(),
             max_value = $('#track_' + track_id + '_maxval').val(),
             mode = $('#track_' + track_id + '_mode option:selected').val();
-        if ( min_value !== this.prefs.min_value || max_value !== this.prefs.max_value || mode != this.prefs.mode ) {
+        if ( min_value !== this.prefs.min_value || max_value !== this.prefs.max_value || mode !== this.prefs.mode ) {
             this.prefs.min_value = parseFloat(min_value);
             this.prefs.max_value = parseFloat(max_value);
             this.prefs.mode = mode;
@@ -601,16 +590,43 @@ var FeatureTrack = function ( name, dataset_id, prefs ) {
     if (prefs.block_color !== undefined) { this.prefs.block_color = prefs.block_color; }
     if (prefs.label_color !== undefined) { this.prefs.label_color = prefs.label_color; }
     if (prefs.show_counts !== undefined) { this.prefs.show_counts = prefs.show_counts; }
-    
 };
 $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
     init: function() {
         var track = this,
             key = track.view.max_low + '_' + track.view.max_high;
+            track.mode = "Auto";
+            if (track.mode_div) {
+                track.mode_div.remove();
+            }
             
             this.init_each({  low: track.view.max_low, 
                                     high: track.view.max_high, dataset_id: track.dataset_id,
                                     chrom: track.view.chrom, resolution: this.view.resolution }, function (result) {
+            
+            track.mode_div = $("<div class='right-float menubutton popup' />").text("Display Mode");
+            track.header_div.append(track.mode_div);
+            track.mode = "Auto";
+            var change_mode = function(name) {
+                track.mode_div.text(name);
+                track.mode = name;
+                track.tile_cache.clear();
+                track.draw();
+            };
+            make_popupmenu(track.mode_div, {
+                "Auto": function() {
+                    change_mode("Auto");
+                },
+                "Dense": function() {
+                    change_mode("Dense");
+                },
+                "Squish": function() {
+                    change_mode("Squish");
+                },
+                "Pack": function() {
+                    change_mode("Pack");
+                }
+            });
             track.data_cache.set(key, result);
             track.draw();
         });
@@ -623,7 +639,7 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
             track.data_queue[key] = true;
             $.getJSON( data_url, {  chrom: track.view.chrom, 
                                     low: low, high: high, dataset_id: track.dataset_id,
-                                    resolution: this.view.resolution }, function (result) {
+                                    resolution: this.view.resolution, mode: this.mode }, function (result) {
                 track.data_cache.set(key, result);
                 // console.log("datacache", track.data_cache.get(key));
                 delete track.data_queue[key];
@@ -631,10 +647,11 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
             });
         }
     },
-    incremental_slots: function( level, features, no_detail ) {
+    incremental_slots: function( level, features, no_detail, mode ) {
         if (!this.inc_slots[level]) {
             this.inc_slots[level] = {};
             this.inc_slots[level].w_scale = 1 / level;
+            this.inc_slots[level].mode = mode;
             this.s_e_by_tile[level] = {};
         }
         // TODO: Should calculate zoom tile index, which will improve performance
@@ -646,8 +663,15 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
             dummy_canvas = $("<canvas></canvas>").get(0).getContext("2d"),
             max_low = this.view.max_low;
             
-        var f_start, f_end, slotted = [];
+        var slotted = [];
         
+        // Reset packing when we change display mode
+        if (this.inc_slots[level].mode !== mode) {
+            delete this.inc_slots[level];
+            this.inc_slots[level] = { "mode": mode, "w_scale": w_scale };
+            delete this.s_e_by_tile[level];
+            this.s_e_by_tile[level] = {};
+        }
         // If feature already exists in slots (from previously seen tiles), use the same slot,
         // otherwise if not seen, add to "undone" list for slot calculation
         for (var i = 0, len = features.length; i < len; i++) {
@@ -663,15 +687,15 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
         
         // console.log("Slotted: ", features.length - undone.length, "/", features.length, slotted);
         for (var i = 0, len = undone.length; i < len; i++) {
-            var feature = features[undone[i]];
+            var feature = features[undone[i]],
                 feature_uid = feature[0],
                 feature_start = feature[1],
                 feature_end = feature[2],
-                feature_name = feature[3];
-            f_start = Math.floor( (feature_start - max_low) * w_scale );
-            f_end = Math.ceil( (feature_end - max_low) * w_scale );
+                feature_name = feature[3],
+                f_start = Math.floor( (feature_start - max_low) * w_scale ),
+                f_end = Math.ceil( (feature_end - max_low) * w_scale );
                         
-            if (!no_detail) {
+            if (feature_name !== undefined && !no_detail) {
                 var text_len = dummy_canvas.measureText(feature_name).width;
                 if (f_start - text_len < 0) {
                     f_end += text_len;
@@ -709,7 +733,7 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
     rect_or_text: function( ctx, w_scale, px_per_char, tile_low, tile_high, feature_start, name, x, x_len, y_center ) {
         ctx.textAlign = "center";
         var gap = Math.round(w_scale / 2);
-        if (name !== undefined && w_scale > px_per_char) {
+        if ( (this.mode === "Pack" || this.mode === "Auto") && name !== undefined && w_scale > px_per_char) {
             ctx.fillStyle = this.prefs.block_color;
             ctx.fillRect(x, y_center + 1, x_len, 9);
             ctx.fillStyle = "#eee";
@@ -729,7 +753,6 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
             tile_high = ( tile_index + 1 ) * DENSITY * resolution,
             tile_span = DENSITY * resolution;
         // console.log("drawing " + tile_index);
-        var slots, required_height;
 
         /*for (var k in this.data_cache.obj_cache) {
             var k_split = k.split("_"), k_low = k_split[0], k_high = k_split[1];
@@ -749,24 +772,26 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
             return;
         }
         
-        if (result.dataset_type === "summary_tree") {
-            required_height = 30;
-        } else {
-            // Calculate new slots incrementally for this new chunk of data and update height if necessary
-            var no_detail = (result.extra_info === "no_detail");
-            
-            var y_scale = ( no_detail ? this.vertical_nodetail_px : this.vertical_detail_px );
-            required_height = this.incremental_slots( this.view.zoom_res, result.data, no_detail ) * y_scale + 15;
-            parent_element.parent().css("height", Math.max(this.height_px, required_height) + "px");
-            slots = this.inc_slots[this.view.zoom_res];
-        }
-        
-        // console.log(tile_low, tile_high, tile_length, w_scale);
         var width = Math.ceil( tile_span * w_scale ),
             new_canvas = $("<canvas class='tile'></canvas>"),
             label_color = this.prefs.label_color,
             block_color = this.prefs.block_color,
-            left_offset = this.left_offset;
+            mode = this.mode,
+            no_detail = (mode === "Squish") || (mode === "Dense") && (mode !== "Pack") || (mode === "Auto" && (result.extra_info === "no_detail")),
+            left_offset = this.left_offset,
+            slots, required_height, y_scale;
+        
+        if (result.dataset_type === "summary_tree") {
+            required_height = 30;
+        } else if (mode === "Dense") {
+            required_height = 15;
+            y_scale = 10;
+        } else {
+            // Calculate new slots incrementally for this new chunk of data and update height if necessary
+            y_scale = ( no_detail ? this.vertical_nodetail_px : this.vertical_detail_px );
+            required_height = this.incremental_slots( this.view.zoom_res, result.data, no_detail, mode ) * y_scale + 15;
+            slots = this.inc_slots[this.view.zoom_res];
+        }
         
         new_canvas.css({
             position: "absolute",
@@ -775,6 +800,7 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
         });
         new_canvas.get(0).width = width + left_offset;
         new_canvas.get(0).height = required_height;
+        parent_element.parent().css("height", Math.max(this.height_px, required_height) + "px");
         // console.log(( tile_low - this.view.low ) * w_scale, tile_index, w_scale);
         var ctx = new_canvas.get(0).getContext("2d"),
             px_per_char = ctx.measureText("A").width;
@@ -832,8 +858,8 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
             if (feature_start <= tile_high && feature_end >= tile_low) {
                 var f_start = Math.floor( Math.max(0, (feature_start - tile_low) * w_scale) ),
                     f_end   = Math.ceil( Math.min(width, Math.max(0, (feature_end - tile_low) * w_scale)) ),
-                    y_center = slots[feature_uid] * y_scale;
-                    
+                    y_center = (mode === "Dense" ? 0 : slots[feature_uid] * y_scale);
+                
                 if (result.dataset_type === "bai") {
                     ctx.fillStyle = block_color;
                     if (feature[4] instanceof Array) {
@@ -856,7 +882,7 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
                         ctx.fillStyle = block_color;
                         this.rect_or_text(ctx, w_scale, px_per_char, tile_low, tile_high, feature_start, feature_name, f_start + left_offset, f_end - f_start, y_center);
                     }
-                    if (!no_detail && feature_start > tile_low) {
+                    if (mode !== "Dense" && !no_detail && feature_start > tile_low) {
                         // Draw label
                         ctx.fillStyle = this.prefs.label_color;
                         if (tile_index === 0 && f_start - ctx.measureText(feature_name).width < 0) {
@@ -886,7 +912,8 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
                             thick_start = Math.floor( Math.max(0, (feature_ts - tile_low) * w_scale) );
                             thick_end = Math.ceil( Math.min(width, Math.max(0, (feature_te - tile_low) * w_scale)) );
                         }
-                        if (feature_name !== undefined && feature_start > tile_low) {
+                        if (mode !== "Dense" && feature_name !== undefined && feature_start > tile_low) {
+                            // Draw label
                             ctx.fillStyle = label_color;
                             if (tile_index === 0 && f_start - ctx.measureText(feature_name).width < 0) {
                                 ctx.textAlign = "left";
@@ -969,8 +996,9 @@ $.extend( FeatureTrack.prototype, TiledTrack.prototype, {
     }, update_options: function(track_id) {
         var block_color = $('#track_' + track_id + '_block_color').val(),
             label_color = $('#track_' + track_id + '_label_color').val(),
+            mode = $('#track_' + track_id + '_mode option:selected').val(),
             show_counts = $('#track_' + track_id + '_show_count').attr("checked");
-        if (block_color !== this.prefs.block_color || label_color !== this.prefs.label_color || show_counts != this.prefs.show_counts) {
+        if (block_color !== this.prefs.block_color || label_color !== this.prefs.label_color || show_counts !== this.prefs.show_counts) {
             this.prefs.block_color = block_color;
             this.prefs.label_color = label_color;
             this.prefs.show_counts = show_counts;
diff --git a/static/trackster.css b/static/trackster.css
index cda30cafe09..e07bcb71547 100644
--- a/static/trackster.css
+++ b/static/trackster.css
@@ -118,6 +118,10 @@
     padding: 1px;
     display: inline-block;
 }
+.right-float {
+    float: right;
+    margin-left: 5px;
+}
 
 #top-labeltrack {
     border-bottom: solid #999 1px;
diff --git a/templates/tracks/browser.mako b/templates/tracks/browser.mako
index 415c5156fa7..a8401281362 100644
--- a/templates/tracks/browser.mako
+++ b/templates/tracks/browser.mako
@@ -30,7 +30,10 @@ ${h.css( "history", "autocomplete_tagging" )}
 
 <%def name="center_panel()">
 <div class="unified-panel-header" unselectable="on">
-    <div class="unified-panel-header-inner">Trackster Visualization | ${config['title']}</div>
+    <div class="unified-panel-header-inner">Trackster Visualization | ${config['title']}
+        <a id="save-button" class="panel-header-button right-float" href="javascript:void(0);">Save</a>
+        <a id="refresh-button" class="panel-header-button right-float" href="javascript:void(0);">Refresh</a>
+    </div>
 </div>
 <div id="content">
     <div id="top-labeltrack"></div>
@@ -68,16 +71,16 @@ ${h.css( "history", "autocomplete_tagging" )}
 
 <%def name="right_panel()">
     <div class="unified-panel-header" unselectable="on">
-        <div class="unified-panel-header-inner">Configuration</div>
+        <div class="unified-panel-header-inner">Configuration
+            <a id="add-track" class="panel-header-button right-float" href="javascript:void(0);">Add Tracks</a>
+        </div>
     </div>
     <form action="#" onsubmit="view.update_options();return false;">
 ##        <input name="title" id="title" value="${config.title}" />
         <div id="show-hide-move">
             <ul id="sortable-ul"></ul>
         </div>
-        <input type="submit" id="refresh-button" value="Refresh" />
-        <input type="button" id="save-button" value="Save" />
-        <input id="add-track" type="button" value="Add Tracks" />
+        <input type="submit" id="refresh-button" value="Refresh" style="display:none" />
     </form>
 
 </%def>
@@ -264,6 +267,7 @@ ${h.js( 'galaxy.base', 'galaxy.panels', "json2", "jquery", "jquery.event.drag",
                 
                 $.ajax({
                     url: "${h.url_for( action='save' )}",
+                    type: "POST",
                     data: {
                         'vis_id': view.vis_id,
                         'vis_title': view.title,
@@ -294,7 +298,7 @@ ${h.js( 'galaxy.base', 'galaxy.panels', "json2", "jquery", "jquery.event.drag",
                     view.chrom_data = data;
                     var chrom_options = '<option value="">Select Chrom/Contig</option>';
                     for (i in data) {
-                        var chrom = data[i]['chrom']
+                        var chrom = data[i]['chrom'];
                         chrom_options += '<option value="' + chrom + '">' + chrom + '</option>';
                     }
                     $("#chrom").html(chrom_options);
diff --git a/templates/workflow/editor.mako b/templates/workflow/editor.mako
index 97f66c5f98f..2b20a4c497b 100644
--- a/templates/workflow/editor.mako
+++ b/templates/workflow/editor.mako
@@ -135,7 +135,7 @@
              "Layout": layout_editor,
              "Save" : save_current_workflow,
              ##"Load a Workflow" : load_workflow,
-             "Close": close_editor,
+             "Close": close_editor
         });
         
         function layout_editor() {