startList = function() {

			if (document.all&&document.getElementById) {

				navRoot = document.getElementById("nav");

				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;	


function Rollover(path) {
    document.getElementById("MainPhoto").src = path;
}