function verifyCompatibleBrowser(){ 
    this.dom=document.getElementById?1:0 
    this.ie4=(document.all)?1:0; 
    this.ns4=(document.layers && !this.dom)?1:0; 
    this.bw=(this.dom || this.ie4 || this.ns4) 
    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.scrollWidth=bw.ns4?this.css.document.width:this.el.offsetWidth 
    this.clipWidth=bw.ns4?this.css.clip.width:this.el.offsetWidth 
    this.gauche=MoveAreaGauche;this.droite=MoveAreaDroite; 
    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 MoveAreaDroite(move){
    if(this.x>-longueur+objContainer.clipWidth){ 
    this.MoveArea(this.x-move,0) 
    if(loop) setTimeout(this.obj+".droite("+move+")",speed) 
	} 
} 
function MoveAreaGauche(move){ 
	if(this.x<0){ 
    this.MoveArea(this.x-move,0) 
    if(loop) setTimeout(this.obj+".gauche("+move+")",speed) 
	} 
} 
 
function PerformScroll(speed){
	if(initialised){
		loop=true;
		if(speed>0) objScroller.droite(speed);
		else objScroller.gauche(speed);
	}
} 

function CeaseScroll(){ 
    if(timer) clearTimeout(timer) 
    loop=false 
} 

var initialised; 

function InitialiseScroll(){ 
    objContainer=new ConstructObject('liste');
	objScroller=new ConstructObject('contenu','liste');
    objScroller.MoveArea(0,0) 
	objContainer.css.visibility='visible';
    initialised=true;
}