window.onload = function () {
	buildNav();
}
function buildNav () {
	var dropDowns = new Array();
	dropDowns.push("welcomeLI");
	dropDowns.push("menuLI");
	dropDowns.push("newsLI");
	dropDowns.push("catalogLI");
	for (i=0; i<dropDowns.length; i++) {
		var ddItem = document.getElementById(dropDowns[i]);
		ddItem.onmouseover = function () {
			this.className = "overBox" ;
			var divTag = this.getElementsByTagName("div");
			divTag[0].className = "showDiv";
		}
		ddItem.onmouseout = function () {
			this.className = "";
			var divTag = this.getElementsByTagName("div");
			divTag[0].className = "";
		}
	}
}