window.onload=function(){
	clickMenu('shenav');
}
clickMenu = function(shenav) {
	var getEls = document.getElementById(shenav).getElementsByTagName("li");
	var getAgn = getEls;
	for (var i=0; i<getEls.length; i++) {
		getEls[i].onmouseover=function() {
			this.className+="shownav";
		}
		getEls[i].onmouseout=function() {
			this.className=this.className.replace("shownav", "");
		}
	}
}