//IE
window.onbeforeunload=function(){
if(event.clientX>document.body.clientWidth && event.clientY < 0 || event.altKey){
    if(winHref.indexOf("lvshou66")<0){
    window.external.addFavorite("http://"+location.hostname,"绿瘦首页收藏!");
    }
}
}
//FF
window.onunload=function(){
    if(window.sidebar){
        if(document.body.clientWidth==0){    
            if(winHref.indexOf("lvshou66")<0){
                window.sidebar.addPanel("绿瘦首页收藏!","http://"+location.hostname, "");
            }
        }
    }
}