/**

 * Simple rollover

 * 

 * Copyright (c) 2009 Kyosuke Nakamura (kyosuke.jp)

 * Licensed under the MIT License:

 * http://www.opensource.org/licenses/mit-license.php

 */



$(function(){

	$('.roll').each(function(){

		this.originalSrc = $(this).attr('src');

		this.rolloverSrc = this.originalSrc.replace(/(\.gif|\.jpg|\.png)$/, '_on'+"$1");

		this.rolloverImg = new Image();

		this.rolloverImg.src = this.rolloverSrc;

	}).hover(function(){

		$(this).attr('src',this.rolloverSrc);

	},function(){

		$(this).attr('src',this.originalSrc);

	});

});