// JavaScript Document


var mouseOver = function(img) {
	if(img.src.indexOf('-over') < 0) {
		img.src = img.src.replace('.gif', '-over.gif');
		window.status=img.getAttribute('alt');
	}
	return true;
}

var mouseOut = function(img) {
	img.src = img.src.replace('-over.gif', '.gif');	
	window.status = '';
	return true;
}
	


var initMenuRollovers = function() {
	if($('menu')) {
		var imageNodes = $('menu').getElementsByTagName('img');	
		var nodes = $A(imageNodes)
		
		nodes.each( function(node) {
			//preload the hover image
			var hoverImage = new Image();
			hoverImage.src = node.src.replace('.gif', '-over.gif');
			//wathc mouseovers		
			Event.observe(node.parentNode, 'mouseover', function() { mouseOver(node); });
			Event.observe(node.parentNode, 'mouseout', function() { mouseOut(node); });
		});
	}
}

var initFrontPageRollovers = function() {
	if($('frontpageNav')) {
		var imageNodes = $('frontpageNav').getElementsByTagName('img');	
		var nodes = $A(imageNodes)
		
		nodes.each( function(node) {
			//preload the hover image
			var hoverImage = new Image();
			hoverImage.src = node.src.replace('.gif', '-over.gif');
			//wathc mouseovers		
			Event.observe(node.parentNode, 'mouseover', function() { mouseOver(node); });
			Event.observe(node.parentNode, 'mouseout', function() { mouseOut(node); });
		});	
	}
}


Event.observe(window, 'load', initMenuRollovers);
Event.observe(window, 'load', initFrontPageRollovers);