$(document).ready(function() {
	$('#divMenu a img').each(function(i){
		var imgOriginal = $(this).attr('src');
		var imgOn = imgOriginal.split('.png');
		imgOn = imgOn[0] + '-on.png';
		$(this).hover(function(){
			$(this).attr({'src':imgOn});
		},function(){
			$(this).attr({'src':imgOriginal});
		});
	});
});