var imgObj;
function loadimg(callback)
{   
    imgObj = new Array();    
    imgObj[0] = "/images/1.jpg";    
    imgObj[1] = "/images/2.jpg";    
    imgObj[2] = "/images/3.jpg";    
    imgObj[3] = "/images/4.jpg";    
    imgObj[4] = "/images/5.jpg";    
    imgObj[5] = "/images/6.jpg";    
    imgObj[6] = "/images/7.jpg";    
    imgObj[7] = "/images/8.jpg";   
           
    var imgpreload = new Array(); 
    for(var i = 0;i<imgObj.length;i++)    
    {        
        imgpreload[i] = new Image();
        imgpreload[i].src = imgObj[i]; 
    }

    if(imgpreload[imgpreload.length-1].complete)
    {
        callback.call();
        return;
    }

    imgpreload[imgpreload.length-1].onload=function()
    {
        callback.call();
    };
}
var time = 5000;
var i =0;
var t;
function ImgBo()
{
    var cur_src = document.getElementById("banner");
    if(i<imgObj.length&&i>0)
    {
        cur_src.style.backgroundImage = "url("+imgObj[i]+")";
    }
    else
    {
        i = 0;
        cur_src.style.backgroundImage = "url("+imgObj[i]+")";
    }
    i = i+1;
    t = setTimeout(ImgBo,time);
}
function Over(url)
{
    clearTimeout(t);
    document.getElementById("banner").style.backgroundImage = "url("+url+")";
}
function Move()
{
    t = setTimeout(ImgBo,time);
}