function mainmenu() {
	var uls = document.getElementById("mainmenu").getElementsByTagName("ul");
	/*for (var i=0, ulLength=uls.length; i<ulLength; i++) {
		var ul = uls[i], ulParent = ul.parentNode;
		ulParent.onmouseover = function() {
			ul.style.display="block";
		}
		ulParent.onmouseout = function() {
			ul.style.display="none";
		}
	}*/
	uls[0].parentNode.onmouseover = function() {
		uls[0].style.display="block";
	}
	uls[0].parentNode.onmouseout = function() {
		uls[0].style.display="none";
	}
	uls[1].parentNode.onmouseover = function() {
		uls[1].style.display="block";
	}
	uls[1].parentNode.onmouseout = function() {
		uls[1].style.display="none";
	}
	uls[2].parentNode.onmouseover = function() {
		uls[2].style.display="block";
	}
	uls[2].parentNode.onmouseout = function() {
		uls[2].style.display="none";
	}
}
window.onload = function() {
	mainmenu();
}