var myOffset = -37;
if(navigator.userAgent.indexOf('Mac') != -1)
	{ nn=10 }
else if (navigator.appName== "Microsoft Internet Explorer") 
	{ nn=0 } else { nn=10 } 
	// topsam = hauteur général des layers
	topsam=120
	// cM(x) = gauche général des layers + variable navigateur + ~ - 10pix 
	cM1= - 106+nn	
	cM2= - 50+nn
	cM3= 70+nn
	cM4=  150+nn

	
	var myMenu1 = new ypSlideOutMenu("menu1", "down", 200, topsam, 200, 120)
	var myMenu2 = new ypSlideOutMenu("menu2", "down", 200, topsam, 190, 160)
	var myMenu3 = new ypSlideOutMenu("menu3", "down", 200, topsam, 150, 100)
	var myMenu4 = new ypSlideOutMenu("menu4", "down", 200, topsam, 230, 100)
	
	myMenu1.onactivate = repositionMenu
	myMenu2.onactivate = repositionMenu
	myMenu3.onactivate = repositionMenu
	myMenu4.onactivate = repositionMenu

	function repositionMenu()
	{
		var newLeft = getWindowWidth() / 2 + myOffset;
		myMenu1.container.style ? myMenu1.container.style.left = newLeft +cM1 : myMenu1.container.left = newLeft;
		myMenu2.container.style ? myMenu2.container.style.left = newLeft +cM2 : myMenu2.container.left = newLeft;
		myMenu3.container.style ? myMenu3.container.style.left = newLeft +cM3 : myMenu3.container.left = newLeft;
		myMenu4.container.style ? myMenu4.container.style.left = newLeft +cM4 : myMenu4.container.left = newLeft;
	}
	
	function getWindowWidth()
	{
		return window.innerWidth ? window.innerWidth : document.body.offsetWidth;
	}
	
	function MM_reloadPage(init) { //reloads the window if Nav4 resized
 if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
 document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
 else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);