dw_scrollLayer.prototype.bSizeDragBar=true;dw_scrollLayer.prototype.setUpScrollbar=function(id,trkId,axis,offx,offy){if(!document.getElementById)return;var bar=document.getElementById(id);var trk=document.getElementById(trkId);dw_slidebar.init(bar,trk,axis,offx,offy);bar.wn=dw_scrollLayers[this.id];if(axis=="v")this.vBarId=id;else this.hBarId=id;if(this.bSizeDragBar)this.setBarSize();bar.on_drag_start=bar.on_slide_start=dw_scrollLayer.getWndoLyrRef;bar.on_drag_end=bar.on_slide_end=dw_scrollLayer.tossWndoLyrRef;bar.on_drag=bar.on_slide=dw_scrollLayer.UpdateWndoLyrPos;}
dw_scrollLayer.getWndoLyrRef=function(){this.wnLyr=document.getElementById(this.wn.lyrId);}
dw_scrollLayer.tossWndoLyrRef=function(){this.wnLyr=null;}
dw_scrollLayer.UpdateWndoLyrPos=function(x,y){var nx,ny;if(this.axis=="v"){nx=this.wn.x;ny=-(y-this.minY)*(this.wn.maxY/(this.maxY-this.minY));}else{ny=this.wn.y;nx=-(x-this.minX)*(this.wn.maxX/(this.maxX-this.minX));}
this.wn.shiftTo(this.wnLyr,nx,ny);}
dw_scrollLayer.prototype.updateScrollbar=function(x,y){var nx,ny;if((this.xdir==0||this.distX==0)&&this.vBarId){if(!this.maxY)return;ny=-(y*((this.bar.maxY-this.bar.minY)/this.maxY)-this.bar.minY);ny=Math.min(Math.max(ny,this.bar.minY),this.bar.maxY);nx=parseInt(this.bar.style.left);}else if((this.ydir==0||this.distY==0)&&this.hBarId){if(!this.maxX)return;nx=-(x*((this.bar.maxX-this.bar.minX)/this.maxX)-this.bar.minX);nx=Math.min(Math.max(nx,this.bar.minX),this.bar.maxX);ny=parseInt(this.bar.style.top);}
this.bar.style.left=nx+"px";this.bar.style.top=ny+"px";}
dw_scrollLayer.prototype.restoreScrollbars=function(){var bar;if(this.vBarId){bar=document.getElementById(this.vBarId);bar.style.left=bar.minX+"px";bar.style.top=bar.minY+"px";}
if(this.hBarId){bar=document.getElementById(this.hBarId);bar.style.left=bar.minX+"px";bar.style.top=bar.minY+"px";}}
dw_scrollLayer.prototype.setBarSize=function(){var lyr,wn,bar;lyr=document.getElementById(this.lyrId);wn=document.getElementById(this.id);if(this.vBarId){bar=document.getElementById(this.vBarId);bar.style.height=(lyr.offsetHeight>wn.offsetHeight)?bar.trkHt/(lyr.offsetHeight/wn.offsetHeight)+"px":bar.trkHt-2*bar.minY+"px";bar.maxY=bar.trkHt-bar.offsetHeight-bar.minY;}
if(this.hBarId){bar=document.getElementById(this.hBarId);bar.style.width=(this.wd>wn.offsetWidth)?bar.trkWd/(this.wd/wn.offsetWidth)+"px":bar.trkWd-2*bar.minX+"px";bar.maxX=bar.trkWd-bar.offsetWidth-bar.minX;}}
dw_scrollLayer.prototype.on_load=function(){this.restoreScrollbars();if(this.bSizeDragBar)this.setBarSize();}
dw_scrollLayer.prototype.on_scroll=dw_scrollLayer.prototype.on_slide=function(x,y){this.updateScrollbar(x,y);}
dw_scrollLayer.prototype.on_scroll_start=dw_scrollLayer.prototype.on_slide_start=function(){if((this.xdir==0||this.distX==0)&&this.vBarId)this.bar=document.getElementById(this.vBarId);else if((this.ydir==0||this.distY==0)&&this.hBarId)this.bar=document.getElementById(this.hBarId);}
dw_scrollLayer.prototype.on_scroll_end=dw_scrollLayer.prototype.on_slide_end=function(x,y){this.updateScrollbar(x,y);this.lyr=null;this.bar=null;}