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 
 
function ConstructObject(obj,nest,number){ 
    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.scrollWidth=bw.ns4?this.css.document.width:this.el.offsetWidth;
    this.clipWidth=bw.ns4?this.css.clip.width:this.el.offsetWidth;
    this.up=MoveAreaUp;this.down=MoveAreaDown; 
    this.left=MoveAreaLeft;this.right=MoveAreaRight;
    this.MoveArea=MoveArea; this.x; this.y; 
	this.initialised=false;
	this.number=number;
	this.timer=0;
    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[GetNumberByID(this.number)].clipHeight){ 
	this.MoveArea(0,this.y-move) 
    if(loop) this.timer = setTimeout(this.obj+".down("+move+")",speed) 
	} 
} 
function MoveAreaUp(move){ 
	if(this.y<0){ 
    this.MoveArea(0,this.y-move) 
    if(loop) this.timer = setTimeout(this.obj+".up("+move+")",speed) 
	} 
} 

function MoveAreaRight(move){ 
	if(this.x>-this.scrollWidth+objContainer[GetNumberByID(this.number)].clipWidth){ 
	this.MoveArea(this.x-move,0) 
    if(loop) this.timer = setTimeout(this.obj+".right("+move+")",speed) 
	} 
}
 
function MoveAreaLeft(move){ 
	if(this.x<0){ 
    this.MoveArea(this.x-move,0) 
    if(loop) this.timer = setTimeout(this.obj+".left("+move+")",speed) 
	} 
}

function GetNumberByID(number){
var n=0;
	for(var i=0; i<cant; i++)
		if (objScroller[i].number==number) {
			n=i;
			break;
		}
	return n;
}

function PerformScroll(speed, objNumber){ 
var n=GetNumberByID(objNumber);
	if (!objNumber)
		n=0;
	if(objScroller[n].initialised){ 
		loop=true; 
		if(speed>0) objScroller[n].down(speed) 
		else objScroller[n].up(speed) 
	} 
} 
 
function PerformScrollHoriz(speed, objNumber){ 
var n=GetNumberByID(objNumber);
	if (!objNumber)
		n=0;
	if(objScroller[n].initialised){ 
		loop=true; 
		if(speed>0) objScroller[n].right(speed) 
		else objScroller[n].left(speed) 
	} 
} 

function CeaseScroll(number){ 
    loop=false 
	var n=GetNumberByID(number);
	if (!number)
		n=0;
	clearTimeout(objScroller[n].timer);
} 

var objScroller=new Array();
var objContainer=new Array();
var cant=0;
function InitialiseScrollableArea(){ 
    objContainer[cant]=new ConstructObject('divContainer'+cant,null,cant) 
    objScroller[cant]=new ConstructObject('divContent'+cant,'divContainer'+cant,cant) 
    objScroller[cant].MoveArea(0,0) 

    objContainer[cant].css.visibility='visible' 
    objScroller[cant].initialised=true;
	cant++;
}
function InitialiseScrollableAreaPersonalized(sContainer, sContent, novisiblefirst, idobject){ 
var id;
	if (idobject)
		id=idobject;
	else
		id=cant;
    objContainer[cant]=new ConstructObject(sContainer,null,id) 
    objScroller[cant]=new ConstructObject(sContent,sContainer,id) 
    objScroller[cant].MoveArea(0,0);
	if (novisiblefirst)
	    objContainer[cant].css.visibility='hidden';
	else
	    objContainer[cant].css.visibility='visible';
    objScroller[cant].initialised=true;
	cant++;
}
function clearDivs() {
	for (var i=0;i<cant;i++) {
		objContainer[i] = null;
		objScroller[i] = null;
	}
	cant = 0;
}

var initialized = false;
function initScroll() {
	if(!initialized) {
		InitialiseScrollableArea();
		initialized = true;
	}
}