document.write("<div id=adimage style=\"width:960px; overflow:hidden; margin:0 auto;\">"+
"<div id=adBig><a href=\"http://chtf.ywexpo.net/News.aspx?id=115\" target=_blank><img   src=\"images/2011-10-18_d.gif\" border=0></A></div>" +
"<div id=adSmall style=\"display: none\"><a href=\"http://chtf.ywexpo.net/News.aspx?id=115\" target=_blank><img   src=\"images/2011-10-18_s.gif\" /></a></div>" +
"</div>");

$(function(){
	//过两秒显示 showImage(); 内容
    setTimeout("showImage();",8000);
    //alert(location);
});
function showImage()
{
    $("#adBig").slideUp(1000,function(){$("#adSmall").slideDown(1000);});
}