function fixBackground() {
		var height = window.screen.height;
		var width = window.screen.width;
		initLightbox();
		if(height > 1000 && width > 1000) {
			document.getElementById('conteneur1').style.background = 'url(i/bgdroite.jpg) no-repeat right bottom fixed';
			document.getElementById('conteneur2').style.background = 'url(i/bggauche.jpg) no-repeat left bottom fixed';
		}
		
		}
		
		sfHover = function() {
		var sfEls = document.getElementById("menu").getElementsByTagName("li");
			for (var i=0; i<sfEls.length; i++) {
				sfEls[i].onmouseover=function() {
					this.className+=" sfhover";
				}
				sfEls[i].onmouseout=function() {
					this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
				}
			}
		}
		if (window.attachEvent) window.attachEvent("onload", sfHover);