startList = function() {
    if (document.all&&document.getElementById) {
    	adjustUl(document.getElementById("showListingNav"));
	    adjustUl(document.getElementById("informationNav"));
	    adjustUl(document.getElementById("loginNav"));
	    adjustUl(document.getElementById("applyNav"));
	}
}

function adjustUl(navRoot) {
    for (i=0; i<navRoot.childNodes.length; i++) {
	    node = navRoot.childNodes[i];
		if (node.nodeName=="LI") {
    		node.onmouseover=function() {
	   			this.className+=" over";
	    	}
		    node.onmouseout=function() {
			    this.className=this.className.replace(" over", "");
		    }
	    }
    }
}

window.onload=startList;