var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
  	var xPosition = isIE ? 0 : 0;
  	var _width = 175;
  	var yPosition = 52;
	
	
	// definitions des hauteurs de menus selon nbre de sous-menu
	

  //new ypSlideOutMenu("id menu","id parent", "slide position", left, top, width, height)
    new ypSlideOutMenu("menu1","","down",xPosition +0,yPosition,214,H[1]);
	new ypSlideOutMenu("menu2","","down",xPosition +168,yPosition,214,H[2]);
  	new ypSlideOutMenu("menu3","","down",xPosition +337,yPosition,214,H[3]);
	new ypSlideOutMenu("menu4","","down",xPosition +508,yPosition,214,H[4]);
	new ypSlideOutMenu("menu5","","down",xPosition +676,yPosition,185,H[5]);