var x,y,dpt;
	function register_position(){ // action au mouvement de la saisie souris
		mouse_x = 0;
		mouse_y = 0;
	    document.onmousemove = position;
	}

	function position(evt){ // récupération de la position souris
		offX = 0;
		offY = 0;
		if(!evt) evt = window.event;    
		if(parseInt(navigator.appVersion) >=4){
		    if(navigator.appName == 'Netscape'){
		        mouse_x = evt.layerX;
				mouse_y = evt.layerY;
		    }else{
				mouse_x = event.x;// + (document.documentElement.scrollLeft + document.body.scrollLeft);
				mouse_y = event.y;// + (document.documentElement.scrollTop + document.body.scrollTop);
				
				if(navigator.userAgent.search("Opera") != -1)
				{
					mouse_x -= 420;
					mouse_y -= 220;
					
					if(mouse_x < 0 || mouse_y < 0)
					{
						mouse_x += 420;
						mouse_y += 220;
					}
				}
		    }
		}
		var info = document.getElementById("info");
		
		info.style.left = (offX + mouse_x + 15) + "px";
		info.style.top = (offY + mouse_y + 15) + "px";
	}


	function montrer(){
		var info = document.getElementById("info");
		var prosp = document.getElementById("zoneGrandProsp");
		
		offX = 0;//Math.floor(prosp.offsetWidth/2);
		offY = 0;//Math.floor(prosp.offsetHeight/2);
		info.innerHTML = "Cliquez pour agrandir";
		info.style.display="block";
	}

	function cacher(){
		var info = document.getElementById("info");
		info.style.display="none";
	}

	function gotoXY(url)
	{
		document.location = url+"&X="+mouse_x+"&Y="+mouse_y+"#mepGallery";
	}