这也是老早前整理的了，也贴出来吧：www.goodsgy.com
1． showModalDialog和showModelessDialog的异同www.goodsgy.com
同：两者弹出的窗体不能刷新www.goodsgy.com
异：前者是模态窗口，始终获得焦点；后者是非模态窗口，只不过弹出一个页面，还可以操作父窗口。www.goodsgy.com
2． 关闭showModalDialog和showModelessDialog弹出的窗口www.goodsgy.com
<INPUT type="button" value="ButtonClick" onclick="self.close();">www.goodsgy.com
3． 怎样才让在showModalDialog和showModelessDialog的弹出新窗口里操作button,不弹出新窗口？www.goodsgy.com
在<head>和</head>之间加<base target="_self">www.goodsgy.com
4. showModalDialog的返回值www.goodsgy.com
参照例子：www.goodsgy.com
t1.html:www.goodsgy.com
<script language="javascript">
function showpage()
{
alert(showModalDialog("t2.html"));
}
</script>
<input type="button" value="getval" onClick="showpage();">www.goodsgy.com
t2.html
<HTML>
<HEAD>
<Script language="javascript">
<
function SetVal()
{
returnValue="abc";
close();
}
//-->
</Script>
</HEAD>
<BODY>
<input type="button" value="Btn1" onClick="SetVal();">
</BODY>
</HTML> www.goodsgy.com
.text:''):(d.getSelection?d.getSelection():'');void(keyit=window.open('http://my.poco.cn/fav/storeIt.php?t='+escape(d.title)+'&u='+escape(d.location.href)+'&c='+escape(t)+'&img=http://www.h-strong.com/blog/logo.gif','keyit','scrollbars=no,width=475,height=575,status=no,resizable=yes'));keyit.focus();){kind=link}