注意是用到了 ， 下列的演示
<scriptlanguage = "javascript" type = "text/javascript">
Ак -время = 8;
отклик = 1;
varns = (document.layers);
varie = (document.all);
varw3 = (document.getElementById &&! IE);
adcount = 0;
functionInitAd () {
if (! ns &&! IE &&! W3) return;
if (ie) addiv = eval ('document.all.sponsoraddiv.style');
elseif (ns) addiv = eval ('document.layers ["sponsoraddiv"]');
elseif (w3) addiv = eval ('document.getElementbyId ("sponsoraddiv"). Style');
randad = math.ceil (math.random ()*Chancead);
if (т.е. || w3)
addiv.visibility = "visible";
еще
addiv.visibubility = "show";
if (randad == 1) showad ();
}
functionshowad () {
if (adcount <adtime*10) {adcount+= 1;
if (ie) {documentWidth = document.Body.OffSetWidth/2+document.body.scrollleft-20;
DocumentHeight = Document.Body.Offsetheight/2+Document.scrolltop-20;}
elseif (ns) {documentwidth = window.innerwidth/2+window.pagexoffset-20;
documentHeight = window.innerheight/2+window.pageyoffset-20;}
elseif (w3) {documentwidth = self.innerwidth/2+window.pagexoffset-20;
DocumentHeight = self.innerheight/2+window.pageyoffset-20;}
addiv.left = documentwidth-100; addiv.top = documentHeight-0;
setTimeout ("showAd ()", 100);}
}
functionCloSead () {
if (т.е. || w3)
addiv.display = "нет";
еще
addiv.visibility = "Hide";
}
функция $ (obj) {
returnDocument.getElementByid (OBJ);
}
functionCheckform () {
if ($ ("file1"). value! = "")
{
if (/jpg|jpeg|gif|bmp/i.test ($ ("file1").
оповещение ("您只能上传图片文件");