$(document).ready(function global_over() {
    var glovalImg = $('img.roll');
    if (glovalImg) {
        var originImg = [];
        var overImg = new Array();
        i = 0;
        var url = window.location.pathname;
        var urlS = "";
        if (url.lastIndexOf('/') != 0) {
            var urlS = url.substring(0, url.lastIndexOf('/') + 1);
        }
        $.each(glovalImg, function (index, value) {
            originImg[i] = $(this).attr("src");
            var extension = originImg[i].substring(originImg[i].lastIndexOf('.'), originImg[i].length);
            overImg[i] = originImg[i].replace(extension, '_o' + extension);
            glovalImg[i].setAttribute('hsrc', overImg[i]);
            var a = originImg[i];
            var linkUrl = $(this).parent().attr("href");
            if (url == linkUrl || urlS == linkUrl) {
                $(glovalImg[i]).attr("src", $(this).attr("hsrc"));
            } else {
                $(glovalImg[i]).mouseover(function () {
                    $(this).attr("src", $(this).attr("hsrc"));
                });
                $(glovalImg[i]).mouseout(function () {
                    $(this).attr("src", a);
                });
            }
            i++;
        });
    }
});