// ½â¾öIEÏÂCSS±³¾°Í¼Æ¬ÉÁ˸µÄBug
document.execCommand("BackgroundImageCache", false, true);
(function(){
    /**//*Use Object Detection to detect IE6*/
    var  m = document.uniqueID /**//*IE*/
    && document.compatMode  /**//*>=IE6*/
    && !window.XMLHttpRequest /**//*<=IE6*/
    && document.execCommand;
    
    try{
        if(!!m){
            m("BackgroundImageCache", false, true) /**//* = IE6 only */ 
        }
        
    }catch(oh){};
})();