// 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=200



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;

}

// end absolutely positioned scrollable area object scripts