var popup;
function ouvrirPopup(u,n,p) {
	if (popup != undefined) {
		popup.close();
	}
	popup = window.open(u,n,p);
}

function ouvrirTournezlespages() {
	var xPos = screen.width/2-400;
	var yPos = screen.height/2-300;
	ouvrirPopup('tournezlespages.html','tournezlespages','width=800,height=600,left='+xPos+',top='+yPos+'');
}
function ouvrirComparatif() {
	var xPos = screen.width/2-400;
	var yPos = screen.height/2-300;
	ouvrirPopup('comparatif.html','comparatif','width=800,height=600,left='+xPos+',top='+yPos+'');
}
function ouvrirCollection(id) {
	var xPos = screen.width/2-400;
	var yPos = screen.height/2-300;
	ouvrirPopup('visuels_collection.php?id='+id,'visuels_collection','width=640,height=360,left='+xPos+',top='+yPos+',scrollbars,resizable');
}


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() {
	if (document.images) {
		bt_interview_over = newImage("images/bt-interview-over.gif");
		bt_lmdls_over = newImage("images/bt-lmdls-over.gif");
		bt_tlp_over = newImage("images/bt-tlp-over.gif");
		bt_ladtse_over = newImage("images/bt-ladtse-over.gif");
		bt_quiz_over = newImage("images/bt-quiz-over.gif");
		preloadFlag = true;
	}
}