一个不错的页面特效

<SCRIPT>
var oPopup = window.createPopup();
var popTop=50;
function popmsg(msgstr){
var winstr="<table width=\"241\" height=\"180\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\" background=\"http://www.jojoo.net/images/js/msg_genius.gif\">";
winstr+="<tr><td height=\"30\"> </td></tr><tr><td align=\"center\"><table width=\"90%\" height=\"180\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">";
winstr+="<tr><td valign=\"top\" style=\"font-size:12px;\">"+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,241,180);
}
popTop+=10;
var mytime=setTimeout("popshow();",180);
}
popmsg("<br><br><marquee scrollamount='3' scrolldelay='2' direction= 'up' width='300' height='120' id=paiheng onmouseover=paiheng.stop() onmouseout=paiheng.start()><br>  本站最後更新時間:2004-2-28 12:35:50<br><br>  本站現有歌手:3126位 专辑:6115张 <br><br>  总数量:84089首 音乐:56018首 <br><br>  DJ:3218首 Flash:4348个 <br><br>  MTV音乐:2251首 图秀:18254张</div>");
</SCRIPT>