模仿QQ和MSN消息提示的效果

    你一定很喜欢像或者好友登录提示的效果吧，那么怎么样能在网页中实现呢？正好我在蓝色理想中发现了这段代码，贴出给大家看看（注意，如果使用以下代码，先将全角“＜＞”替换成半角的“<”才能正常使用）：

＜SCRIPT＞
var oPopup = window.createPopup();
var popTop=50;
function popmsg(msgstr){
var winstr="＜table style="border: 1 solid  #FFA6CA"  width="241" height="172" border="0" cellpadding="0" cellspacing="0"  background="http://www.blueidea.com/articleimg/2004/01/1576/04-s.jpg" ＞";
winstr+="＜tr＞＜td height="30"＞ ＜/td＞＜/tr＞＜tr＞＜td align="center"＞＜table width="90%" height="110" border="0" cellpadding="0" cellspacing="0"＞";
winstr+="＜tr＞＜td valign="top" style="font-size:12px; color: red; face: Tahoma"＞"+msgstr+"＜/td＞＜/tr＞＜/table＞＜/td＞＜/tr＞＜/table＞";
oPopup.document.body.innerHTML = winstr;
popshow();
}
function popshow(){
window.status=popTop;
if(popTop＞1720){
clearTimeout(mytime);
oPopup.hide();
return;
}else if(popTop＞1520&&popTop＜1720){
oPopup.show(screen.width-250,screen.height,241,1720-popTop);
}else if(popTop＞1500&&popTop＜1520){
oPopup.show(screen.width-250,screen.height+(popTop-1720),241,172);
}else if(popTop＜180){
oPopup.show(screen.width-250,screen.height,241,popTop);
}else if(popTop＜220){
oPopup.show(screen.width-250,screen.height-popTop,241,172);
}
popTop+=10;
var mytime=setTimeout("popshow();",50);
}
popmsg("    ＜img border="0" src="https://img.tulaoshi.com/attachment/portal/oldjcwimg/2005-11/15/05111512361982888.gif"" width="90" height="27"＞欢迎光临蓝色理想，大量的设计资源等着你!有什么问题可以到经典论坛提出。");
＜/SCRIPT＞