function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) { 
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	var path='';
	if (document.images) {
		menu_01_over = newImage("images/menu_01-over.png");
		menu_02_over = newImage("images/menu_02-over.png");
		menu_03_over = newImage("images/menu_03-over.png");
		menu_04_over = newImage("images/menu_04-over.png");
		menu_05_over = newImage("images/menu_05-over.png");
		preloadFlag = true;
	}
}


function rollover(choix, bouton, encours) {
	if (encours==bouton) choix='over';
	var cls = bouton+"_"+choix;
	document.getElementById(bouton).className=cls;
}

function rollover2(ptr, choix) {
	var cls = "onglets"+choix;
	document.getElementById("onglets").className=cls;

	for (var i=1; i<=4; i+=1) {
		var name="sub_onglets"+i;
		if (i==choix) { 
			document.getElementById(name).style.display='block';
			document.getElementById(name).style.visibility='visible';
		}
		else {
			document.getElementById(name).style.display='none';
			document.getElementById(name).style.visibility='hidden';
		}
	}
	
}


 function popup(page) {
      window.open (page,"mail","menubar=0,scrollbars=1,resizable=1,width=450,height=450");
    }