window.onload = initOnLoad;

function initOnLoad() {
	menuRollover();	
}




function menuRollover() {
	var listItems = document.getElementById('header').getElementsByTagName('LI');
	for (var i=0;i<listItems.length;i++) {
		listItems[i].onmouseover = roll;
		listItems[i].onmouseout = unroll;
	}
	
	function roll(img) {
		var img = this.getElementsByTagName('IMG')[0];
		if (img.parentNode.className.indexOf('active')!=-1) {return}
		if (img.parentNode.tagName=='A') {
			img.src = img.src.replace (/-hover/,'');
			img.src = img.src.replace(/\.gif/,'-hover.gif');
		}
	}
	function unroll() {
		var img = this.getElementsByTagName('IMG')[0];
		if (img.parentNode.className.indexOf('active')!=-1) {return}
		if (img.parentNode.tagName=='A') {
			img.src = img.src.replace(/\-hover/,'');
		}
	}
	
}