/**

 * rollOver on jQuery

 * rollOver tag:img,input

 * rollOver class:Over

 * rollOver FileName:*_on.*

 * Last modify:20081210

 * Licensed:MIT License

 * @author AkiraNISHIJIMA(http://nishiaki.probo.jp/)

 */

function rollOver(){

    var preLoad = new Object();

    $('img.Over,input.Over').not("[@src*='_on.']").each(function(){

        var imgSrc = this.src;

        var fType = imgSrc.substring(imgSrc.lastIndexOf('.'));

        var imgName = imgSrc.substr(0, imgSrc.lastIndexOf('.'));

        var imgOver = imgName + '_on' + fType;

        preLoad[this.src] = new Image();

        preLoad[this.src].src = imgOver;

        $(this).hover(

            function (){

                this.src = imgOver;

            },

            function (){

                this.src = imgSrc;

            }

        );

    });

}

$(document).ready(rollOver);