﻿function verifyCompatibleBrowser(){ 
		    this.ver=navigator.appVersion 
		    this.dom=document.getElementById?1:0 
		    this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0; 
		    this.ie4=(document.all && !this.dom)?1:0; 
		    this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
		 
		    this.ns4=(document.layers && !this.dom)?1:0; 
		    this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5) 
		    return this 
		} 
		bw=new verifyCompatibleBrowser() 
		 
		 
		var speed=50 
		 
		var loop, timer 
		 
		function ConstructObject(obj,nest){ 
		    nest=(!nest) ? '':'document.'+nest+'.' 
		    this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0; 
		    this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0; 
		    this.scrollHeight=bw.ns4?this.css.document.height:this.el.offsetHeight 
		    this.clipHeight=bw.ns4?this.css.clip.height:this.el.offsetHeight 
		    this.up=MoveAreaUp;this.down=MoveAreaDown; 
		    this.MoveArea=MoveArea; this.x; this.y; 
		    this.obj = obj + "Object" 
		    eval(this.obj + "=this") 
		    return this 
		} 
		function MoveArea(x,y){ 
		    this.x=x;this.y=y 
		    this.css.left=this.x 
		    this.css.top=this.y 
		} 
		 
		function MoveAreaDown(move){ 
			if(this.y>-this.scrollHeight+objContainer.clipHeight){ 
		    this.MoveArea(0,this.y-move) 
		    if(loop) setTimeout(this.obj+".down("+move+")",speed) 
			} 
		} 
		function MoveAreaUp(move){ 
			if(this.y<0){ 
		    this.MoveArea(0,this.y-move) 
		    if(loop) setTimeout(this.obj+".up("+move+")",speed) 
			} 
		} 
		 
		function PerformScroll(speed){ 
			if(initialised){ 
				loop=true; 
				if(speed>0) objScroller.down(speed) 
				else objScroller.up(speed) 
			} 
		} 
		 
		function CeaseScroll(){ 
		    loop=false 
		    if(timer) clearTimeout(timer) 
		} 
		var initialised; 
		function InitialiseScrollableArea(){ 
		    objContainer=new ConstructObject('divContainer') 
		    objScroller=new ConstructObject('divContent','divContainer') 
		    objScroller.MoveArea(0,0) 
		    objContainer.css.visibility='visible' 
		    initialised=true; 
		} 
