function addFlash_AD(url,width,height,link){
try{
var lastName = url.substring(url.lastIndexOf('.') + 1,url.length);
if(lastName == 'swf'){
document.write('');
}else if(lastName == 'gif' || lastName == 'jpg'){
document.write('
');
}else{
alert('广告格式不对,无法显示');
}
}catch(ex){
alert("错误: \n" + ex.number + ex.description);
}
}