// begin absolutely positioned scrollable area object scripts
// Extension developed by David G. Miles
// Original Scrollable Area code developed by Thomas Brattli

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 + 'px'
  this.css.top=this.y + 'px'
	}

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;
	}
	
// end absolutely positioned scrollable area object scripts