在<head></head> 加
<script type="text/javcascript">
function winOpen(url,width,height,top,left){
var attr="width="+width+",height="+height+",,top="+top+",left="+left;
var myWin=window.open(url,"testWindow",attr);
myWin.focus()
}
下面是;HTML里的内容
<a herf="javascript:winOpen('http://www.yahoo.com',640,280,100,200;">
open it </a>