$(function(){
$("#img_rand").mousemove(function(){
        $(this).css("cursor","pointer");
}).mouseout(function(){
        $(this).css("cursor","pointer");
});
$("#img_rand").click(function(){
        var date = new Date();
        $(this).attr("src","/e/ShowKey/index.php?ecms&v="+date.valueOf());
})

$("#regain").click(function(){
        var date = new Date();
        $("#img_rand").attr("src","/e/ShowKey/index.php?ecms&v="+date.valueOf());
    });
});