var temp = null;
    $("#xxx").click(function () {        
        temp = jQuery.FrameDialog.create({
            url: 'http://www.163.com',
            loadingClass: 'loading-image',
            title: 测试页面title,
            width: 400,
            height: 250,
            autoOpen: false,
            position: 'center'
        });
        temp.dialog("open");
    })
这里的loadingClass: 'loading-image'一直没起作用  求解在我的head里面 
    <style type="text/css">
        .loading-image { background: transparent url('/imgs/progress-indicator-alpha.gif') no-repeat center center; }
    </style>
写了样式了