刷新随机显示图片

var random = function(){
    var a = 2;
    var n = Math.round(Math.random()*(a-1))+1;  
    function obj(){
        this.href = '';
        this.class = '';
    }

    b = new Array();
    for (var i=1;i<=a;i++){
        b[i] = new obj();
    }

    b[1].href = "http://zgyxl.1905.com/";
    b[1].class = "zgyxl-back2015";
    b[2].href = "http://cinderella.1905.com/";
    b[2].class = "hgn-back2014";

    $('.link_l').add('.link_r').attr('href',b[n].href)
    $('body').removeClass().addClass(b[n].class);
}
random();