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        //speed
var pause=7000;     //time pause
var velocity=7;
var loop, timer, timer2;
var compteur=4;     // how much news group
var compte=1;
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.cs=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0;
    this.scrollHeight=bw.ns4?this.cs.document.height:this.el.offsetHeight
    this.clipHeight=bw.ns4?this.cs.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.cs.left=this.x
    this.cs.top=this.y
}

function MoveAreaDown(move){
	if(this.y>-30*compte){
		this.MoveArea(0,this.y-move)
    	if(loop) timer=setTimeout(this.obj+".down("+move+")",speed)
		}
	else {
	CeaseScroll();
	compte++;
	if(compte<=compteur)setTimeout('PerformScroll(velocity)',pause);
	else if(compte>compteur){
		compte=0;
		setTimeout('Rewind()',7000); // time of the last pause
		}
	}
	}

function Rewind() {
	 objScroller.MoveArea(0,30);
	 setTimeout('PerformScroll(velocity)',1);
	}

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('newsboard')
    objScroller=new ConstructObject('newscontent','newsboard')
    objScroller.MoveArea(0,0)
    objContainer.cs.visibility='visible'
    initialised=true;
}