function openPopup(url){
	var hauteur = 600; 
	var largeur = 600;
	var top=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;
	return window.open(url,'gallery','status=yes,toolbar=no,scrollbars=yes,resizable=yes,height=' + hauteur + ',width=' + largeur + ',top='+top+',left='+left);			
}

function popup(url,width,height){
	var top=(screen.height-height)/2;
	var left=(screen.width-width)/2;
	return window.open(url,'popup','status=yes,toolbar=no,scrollbars=yes,resizable=yes,height=' + height + ',width=' + width + ',top='+top+',left='+left);			
}

function closePopup(){
	window.close();
	//window.opener.location.reload();
}

function find(item) {
	if( window.mmIsOpera ) return(document.getElementById(item));
	if (document.all) return(document.all[item]);
	if (document.getElementById) return(document.getElementById(item));
	return(false);
}
function toggle(id){
	liens=find(id);
	if (liens.style.display=='block') style = 'none'
	else style = 'block';
	liens.style.display = style;
	return style;
}
function hide(id){
	liens=find(id);
	liens.style.display='none';
}
function show(id){
	liens=find(id);
	liens.style.display='block';
}

function togglePersistant(id){
	style = toggle(id);
	createCookie('toggle'+id,style);
}
function displayFromCookie(id){
	style = readCookie('toggle'+id);
	if (style!=null){
		liens=find(id);
		liens.style.display = style;
	}
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++){
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}