dropThis = function() {
	if (document.all) {
		ppeNav = document.getElementById("ppe");
		ppeLi = ppeNav.getElementsByTagName("li");
		for(i=0; i<ppeLi.length; i++) {
			ppeLi[i].onmouseover = function() {
				this.className += " over";
			}
			ppeLi[i].onmouseout = function() {
				this.className = this.className.replace(new RegExp(" over\\b"), "");
			}
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", dropThis);