function setupSwaps() {
	var obj = document.getElementById('menu');

	var imgs = obj.getElementsByTagName('img');
	var elem;
	
	for (i=0;i<imgs.length;i++) {
		elem = imgs.item(i);

		if (elem.parentNode.tagName.toLowerCase() == "a") {
			elem.onmouseover = function() {
				this.src = "images/" + this.id + "_on.gif";
			}
		
			elem.onmouseout = function() {
				this.src = "images/" + this.id + "_off.gif";
			}
		}
	}
}

function setup() {
	setupSwaps();
}

function openPicture(p,x,y) {
	window.open("picture.php?picture_id="+p,"picture"+p,"width="+x+",height="+y+",menubar=no,resizable=no,scrollbars=no,toolbar=no");
}

window.onLoad = setup();