var prevMenu=null;
window.onload =firefoxInit;

function showSmenu(menu){
	var layer= document.getElementById(menu);
	if(layer != null){
		if(prevMenu != null)prevMenu.style.display="none";
		layer.style.display="block";
		prevMenu = layer;
	}
}

function hideMenu(){
	if(prevMenu != null){
		prevMenu.style.display="none";
		prevmenu=null;
	}
}

function firefoxInit() {
	if(navigator.userAgent.indexOf("MSIE") == -1) {
		var layers = new Array("smDecouvrir","smRevues","smPublications","smVentes");
		for(var i=0; i < layers.length; i++){
			var calque = eval('document.getElementById("'+layers[i]+'")');
			if(calque != null) {
				calque.onmouseout=function(event){
					if((event.layerX < 0) || (event.layerX > this.offsetWidth) || (event.layerY < 0) || (event.layerY > this.offsetHeight))hideMenu();

				}
			}
		}
	}
}