var Scrollbar=new Class({Extends:Slider,options:{orientation:'vertical',discreet:false,divisor:1.2,cursor:14,wheel:false},initialize:function(frame,wrapper,options){this.setOptions(options);this.wrapper=wrapper;this.frame=frame;var cn=(this.options.orientation=='vertical')?'.vscrollbar':'.hscrollbar';this.parent(frame.getElement(cn),this.options);this.setPosition();this.setCursor();if(this.options.wheel)
this.frame.cloneEvents(this.container,'mousewheel');this.addEvent('onChange',function(){wrapper.setStyle(this.mode.direction,-this.getValue());});},mousedown:function(event){if(this.options.max<0)return;this.parent(event);},mousewheel:function(event){if(this.options.max<0)return;this.parent(event);},setPosition:function(){var fsize=this.frame.getSize(),d=0,axe='x',direction='left',margin={},p,element;if(this.mode.axe=='x'){direction='top';axe='y';d=1;}
var marray=this.container.getStyle('margin').split(' ');margin.y=marray[0+d].toInt()+marray[2+d].toInt();margin.x=marray[1+d].toInt();this.container.setStyle(this.mode.offset,fsize[this.mode.axe]-margin.y);p=fsize[axe]-margin.x-this.container.getSize()[axe];this.container.setStyle(direction,p);element=this.container.getElementsWithAssociate('.up, .bar, .down');p=element.up.getSize()[this.mode.axe]+element.down.getSize()[this.mode.axe];element.bar.setStyle(this.mode.offset,this.container.getSize()[this.mode.axe]-p);this.container.setStyle('visibility','visible');},setCursor:function(){var coo=this.frame.getCoordinates(),woo=this.wrapper.getCoordinates(),p,part,diff;this.wrapper.setStyle('top',this.options.min);this.options.max=woo[this.mode.offset]-coo[this.mode.offset];if(this.options.max<0)this.element.setNone();else this.element.setBlock();p=coo[this.mode.offset]-this.options.max;p=(p<this.options.cursor)?this.options.cursor:p/=this.options.divisor;if(this.options.max<0)
p=0;part=this.element.getElementsWithAssociate('.left, .middle, .right');diff=part.left.getSize()[this.mode.axe]-part.right.getSize()[this.mode.axe];part.middle.setStyle(this.mode.offset,p-diff);this.element.setStyle(this.mode.direction,0).setStyle('visibility','visible');}});