timer=0;
y=0;
y2=0;
 
function init_timer(){
	timer=1;
}
 
function stop_timer(){
	timer=0;
}
 
function slide(limit,calq,sens){
	direction=sens;
	limite=limit;
	calque=calq;
if (document.getElementById){
	document.getElementById(calque).style.top=y;
	}
if (document.all && !document.getElementById){
	document.all.style.top=y;
	}
if (document.layers){
	document.layers.top=y;
	}
if(direction=='upp' && y>limite){
	setTimeout("slide(limite,calque,direction)",20);
 
	y-=7;
	}
else if(direction=='dwn' && y<limite){
	setTimeout("slide(limite,calque,direction)",20);
 
	y+=7;
	}
} 

function scroller(calq,sens){
	direction=sens;
	calque=calq;
if (document.getElementById){
	var lim=document.getElementById(calque).offsetHeight;
	document.getElementById(calque).style.top=y2;
	}
if (document.all && !document.getElementById){
	var lim=document.calque.offsetHeight;
	document.all.style.top=y2;
	}
if (document.layers){
	var lim=document.calque.offsetHeight;
	document.layers.top=y2;
	}
	//var lim2=343-lim;
	var lim2=450-lim;
if(direction=='upp' && timer==1 && y2>lim2){
	setTimeout("scroller(calque,direction)",20);
 
	y2-=7;
	}
else if(direction=='dwn' && timer==1 && y2<0){
	setTimeout("scroller(calque,direction)",20);
 
	y2+=7;
	}
}

function register_position(){
		// permet de déterminer le navigateur en fonction de nos besoins
		var dom = net = iex = false;
		if (document.getElementById) dom = true; // IE5+ ou Netscape6+/Mozilla
		if (document.layers) net = true; // Netscape4 
		if (document.all) iex = true; // IE4+
		
		if (iex) {
		  var larg_utile = document.body.offsetWidth;
		  var haut_utile = document.body.offsetHeight;
		}
		else if (dom || net) {
		  var larg_utile = window.innerWidth;
		  var haut_utile = window.innerHeight;
		}
		
	mouse_x = 0;
	mouse_y = 0;
	centrex = ((larg_utile-800)/2)-10;
	centrey = 120;
	document.onmousemove = position;
}

//-->