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;

} 

var speed=50 

var loop, timer 

function ConstructObject(obj,nest){ 

bw=new verifyCompatibleBrowser(); 


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(parseFloat(this.y)>-this.scrollHeight+objContainer.clipHeight){ 
this.MoveArea(0+"px",(parseFloat(this.y)-move)+"px") 
if(loop) setTimeout(this.obj+".down("+move+")",speed) 
} 
} 
function MoveAreaUp(move){ 
if(parseFloat(this.y)<0){ 
this.MoveArea(0+"px",(parseFloat(this.y)-move)+"px") 
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; 

}