document.write('<div id="topbg" style="position:absolute; left:0px; top:0px; width:760px; height:154px; z-index:-1; background-image: url(style/i.sub/top-bg.jpg); layer-background-image: url(style/i.sub/top-bg.jpg); border: 1px none #000000;"></div>');
function setWd() {
  if (topbg) topbg.style.width = document.body.clientWidth;
}
onresize = setWd;
setWd();