window.addEvent('domready', function() {
$$('img.mo').each(function(img) {
	var src = img.getProperty('src');
	var extension = src.substring(src.lastIndexOf('.'),src.length)
  var src1 = src.replace(extension,'-mo' + extension);
  new Asset.images([src1]);
	img.addEvent('mouseenter', function() { img.setProperty('src',src1); });
	img.addEvent('mouseleave', function() { img.setProperty('src',src); });
});
});

function menu_change(menu,url) {
	var el=$(menu);
	if (el.getElement('ul').getStyle('display')=='none') { 
		el.getElement('ul').setStyle('display','block');
		el.getElement('span.plus').set('class','minus');
	}
	else {
		el.getElement('ul').setStyle('display','none');
		el.getElement('span.minus').set('class','plus');
	}
	
	
}