diff -r 60a291fe7965 -r c0a4be863a7d web/data/cubicweb.timeline-bundle.js
--- a/web/data/cubicweb.timeline-bundle.js	Thu Nov 13 15:54:24 2008 +0100
+++ b/web/data/cubicweb.timeline-bundle.js	Thu Nov 13 19:37:36 2008 +0100
@@ -3722,21 +3722,25 @@
 };
 Timeline.createBandInfo=function(D){var E=("theme" in D)?D.theme:Timeline.getDefaultTheme();
 var B=("eventSource" in D)?D.eventSource:null;
-var F=new Timeline.LinearEther({centersOn:("date" in D)?D.date:new Date(),interval:SimileAjax.DateTime.gregorianUnitLengths[D.intervalUnit],pixelsPerInterval:D.intervalPixels,theme:E});
-var G=new Timeline.GregorianEtherPainter({unit:D.intervalUnit,multiple:("multiple" in D)?D.multiple:1,theme:E,align:("align" in D)?D.align:undefined});
-var I={showText:("showEventText" in D)?D.showEventText:true,theme:E};
-if("eventPainterParams" in D){for(var A in D.eventPainterParams){I[A]=D.eventPainterParams[A];
-}}if("trackHeight" in D){I.trackHeight=D.trackHeight;
-}if("trackGap" in D){I.trackGap=D.trackGap;
-}var H=("overview" in D&&D.overview)?"overview":("layout" in D?D.layout:"original");
+var F={interval:SimileAjax.DateTime.gregorianUnitLengths[D.intervalUnit],pixelsPerInterval:D.intervalPixels,theme:E};
+if("startsOn" in D||"endsOn" in D){if("startsOn" in D){F.startsOn=D.startsOn;
+}if("endsOn" in D){F.endsOn=D.endsOn;
+}}else{F.centersOn=("date" in D)?D.date:new Date();
+}var G=new Timeline.LinearEther(F);
+var H=new Timeline.GregorianEtherPainter({unit:D.intervalUnit,multiple:("multiple" in D)?D.multiple:1,theme:E,align:("align" in D)?D.align:undefined});
+var J={showText:("showEventText" in D)?D.showEventText:true,theme:E};
+if("eventPainterParams" in D){for(var A in D.eventPainterParams){J[A]=D.eventPainterParams[A];
+}}if("trackHeight" in D){J.trackHeight=D.trackHeight;
+}if("trackGap" in D){J.trackGap=D.trackGap;
+}var I=("overview" in D&&D.overview)?"overview":("layout" in D?D.layout:"original");
 var C;
-if("eventPainter" in D){C=new D.eventPainter(I);
-}else{switch(H){case"overview":C=new Timeline.OverviewEventPainter(I);
+if("eventPainter" in D){C=new D.eventPainter(J);
+}else{switch(I){case"overview":C=new Timeline.OverviewEventPainter(J);
 break;
-case"detailed":C=new Timeline.DetailedEventPainter(I);
+case"detailed":C=new Timeline.DetailedEventPainter(J);
 break;
-default:C=new Timeline.OriginalEventPainter(I);
-}}return{width:D.width,eventSource:B,timeZone:("timeZone" in D)?D.timeZone:0,ether:F,etherPainter:G,eventPainter:C,theme:E,zoomIndex:("zoomIndex" in D)?D.zoomIndex:0,zoomSteps:("zoomSteps" in D)?D.zoomSteps:null};
+default:C=new Timeline.OriginalEventPainter(J);
+}}return{width:D.width,eventSource:B,timeZone:("timeZone" in D)?D.timeZone:0,ether:G,etherPainter:H,eventPainter:C,theme:E,zoomIndex:("zoomIndex" in D)?D.zoomIndex:0,zoomSteps:("zoomSteps" in D)?D.zoomSteps:null};
 };
 Timeline.createHotZoneBandInfo=function(D){var E=("theme" in D)?D.theme:Timeline.getDefaultTheme();
 var B=("eventSource" in D)?D.eventSource:null;
@@ -3878,23 +3882,25 @@
 }}if(!E.autoWidth){return ;
 }F();
 };
-Timeline._Impl.prototype._initialize=function(){var H=this._containerDiv;
-var E=H.ownerDocument;
-H.className=H.className.split(" ").concat("timeline-container").join(" ");
-var B=(this.isHorizontal())?"horizontal":"vertical";
-H.className+=" timeline-"+B;
-while(H.firstChild){H.removeChild(H.firstChild);
-}var A=SimileAjax.Graphics.createTranslucentImage(Timeline.urlPrefix+(this.isHorizontal()?"data/timeline/copyright-vertical.png":"data/timeline/copyright.png"));
-A.className="timeline-copyright";
-A.title="Timeline © SIMILE - http://simile.mit.edu/timeline/";
-SimileAjax.DOM.registerEvent(A,"click",function(){window.location="http://simile.mit.edu/timeline/";
+Timeline._Impl.prototype._initialize=function(){var E=this._containerDiv;
+var G=E.ownerDocument;
+E.className=E.className.split(" ").concat("timeline-container").join(" ");
+var A=(this.isHorizontal())?"horizontal":"vertical";
+E.className+=" timeline-"+A;
+while(E.firstChild){E.removeChild(E.firstChild);
+}var B=SimileAjax.Graphics.createTranslucentImage(Timeline.urlPrefix+(this.isHorizontal()?"data/timeline/copyright-vertical.png":"data/timeline/copyright.png"));
+B.className="timeline-copyright";
+B.title="Timeline © SIMILE - http://simile.mit.edu/timeline/";
+SimileAjax.DOM.registerEvent(B,"click",function(){window.location="http://simile.mit.edu/timeline/";
 });
-H.appendChild(A);
+E.appendChild(B);
 this._bands=[];
 for(var C=0;
 C<this._bandInfos.length;
-C++){var G=new Timeline._Band(this,this._bandInfos[C],C);
-this._bands.push(G);
+C++){var F=this._bandInfos[C];
+var D=F.bandClass||Timeline._Band;
+var H=new D(this,this._bandInfos[C],C);
+this._bands.push(H);
 }this._distributeWidths();
 for(var C=0;
 C<this._bandInfos.length;
@@ -3903,14 +3909,14 @@
 }}if(this.autoWidth){for(var C=0;
 C<this._bands.length;
 C++){this._bands[C].addOnScrollListener(this._autoWidthScrollListener);
-}}var D=SimileAjax.Graphics.createMessageBubble(E);
-D.containerDiv.className="timeline-message-container";
-H.appendChild(D.containerDiv);
-D.contentDiv.className="timeline-message";
-D.contentDiv.innerHTML="<img src='"+Timeline.urlPrefix+"data/timeline/progress-running.gif' /> Loading...";
-this.showLoadingMessage=function(){D.containerDiv.style.display="block";
-};
-this.hideLoadingMessage=function(){D.containerDiv.style.display="none";
+}}var I=SimileAjax.Graphics.createMessageBubble(G);
+I.containerDiv.className="timeline-message-container";
+E.appendChild(I.containerDiv);
+I.contentDiv.className="timeline-message";
+I.contentDiv.innerHTML="<img src='"+Timeline.urlPrefix+"data/timeline/progress-running.gif' /> Loading...";
+this.showLoadingMessage=function(){I.containerDiv.style.display="block";
+};
+this.hideLoadingMessage=function(){I.containerDiv.style.display="none";
 };
 };
 Timeline._Impl.prototype._distributeWidths=function(){var B=this.getPixelLength();