//预载导航图片
function loadImages()
{
    var d=document; if(d.images)
               {
                     if(!d.MM_p) d.MM_p=new Array();
                     var i,j=d.MM_p.length,a=loadImages.arguments; 
                     for(i=0; i<a.length; i++)
                     {
                            if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}
                     }   
               }
}
loadImages('images/daohangbg1.jpg','images/daohangbg2.jpg');