startList = function() {
	getImage();
	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", "");
				}
			}
		}
	}
}

function get_random() {
	var ranNum= Math.round(Math.random()*2);
	return ranNum;
}

function getImage() {
	var img=get_random();
	var arrImages=new Array(3)
	arrImages[0]="mainpic-1.jpg";
	arrImages[1]="mainpic-2.jpg";
	arrImages[2]="mainpic-3.jpg";
	
	//alert(arrImages[img]);
	if (document.gallery){
		document.gallery.src = "images/" + arrImages[img];
	}
}

window.onload=startList;