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) {
		nav_01_over = newImage("images/nav_01-over.gif");
		nav_03_over = newImage("images/nav_03-over.gif");
		nav_05_over = newImage("images/nav_05-over.gif");
		nav_07_over = newImage("images/nav_07-over.gif");
		nav_09_over = newImage("images/nav_09-over.gif");
		nav_11_over = newImage("images/nav_11-over.gif");
		nav_13_over = newImage("images/nav_13-over.gif");
		nav_15_over = newImage("images/nav_15-over.gif");
		nav_17_over = newImage("images/nav_17-over.gif");
		nav_19_over = newImage("images/nav_19-over.gif");
		B3_02_over = newImage("images/B3_02-over.gif");
		B3_03_over = newImage("images/B3_03-over.gif");
		Nav_continuer_01_over = newImage("images/Nav-continuer_01-over.gif");
		Nav_infos_01_over = newImage("images/Nav-infos_01-over.gif");
		nav_respiration_01_over = newImage("images/nav-respiration_01-over.gif");
		
	preloadFlag = true;
	}
}
function closeWindow() {
	window.close();
	}


function PopupCentrer(page,largeur,hauteur,options) {
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}