/**
 * rollOver on jQuery
 * rollOver tag:img,input
 * rollOver class:Over
 * rollOver FileName:*_o.*
 * Last modify:20081210
 * Licensed:MIT License
 * @author AkiraNISHIJIMA(http://nishiaki.probo.jp/)
 */

function rollOver(){
	var preLoad = new Object();
  $('img.ro,input.ro').not("[@src*='_ro.']").each(function(){
  	var imgSrc = this.src;
    var fType = imgSrc.substring(imgSrc.lastIndexOf('.'));
    var imgName = imgSrc.substr(0, imgSrc.lastIndexOf('.'));
    var imgOver = imgName + '_ro' + fType;
    preLoad[this.src] = new Image();
    preLoad[this.src].src = imgOver;
    $(this).hover(
        function (){
            this.src = imgOver;
        },
        function (){
            this.src = imgSrc;
        }
    );
  });
}
$(document).ready(rollOver);