shu=5
theAds = new Array();
theAds[1] = "<a href='http://www.jh-zm.com'  target='_blank'><img src='/Union-Res/resources/jh-light-960-80.gif'></a>";
theAds[2] = "<a href='#' target='_blank'><img src='/Union-Res/resources/960x80-1.gif'></a>";
theAds[3] = "<a href='#' target='_blank'><img src='/Union-Res/resources/960x80-2.gif'></a>";
theAds[4] = "<a href='#' target='_blank'><img src='/Union-Res/resources/960x80-3.gif'></a>";
theAds[5] = "<a href='#' target='_blank'><img src='/Union-Res/resources/960x80-4.gif'></a>";
sx = parseInt(Math.random()*shu+1);
document.write(theAds[sx]);