100分请问小问题,高手进啊
怎么样才能实现点右边的按钮让左边消失但是右边的按钮不能消失
test.htm
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>document</title>
<body leftmargin="0" topmargin="0">
<table width="100%" border="0" cellspacing="0">
<tr>
<td height="40">欢迎你来到这里</td>
</tr>
</table>
<table width="96%" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr bgcolor="#FFFFFF">
<td width="100" valign="top" bgcolor="#FFFFFF">
<table width="100%" border="0">
<tr align="center" valign="top" bgcolor="#FFFFFF">
<a href="test1.htm" target="right">歌曲</a></td>
</tr>
<tr align="center" valign="top" bgcolor="#FFFFFF">
<a href="test.htm" target="right">小品</a></td>
</tr>
</table>
</td>
<td height="500" valign="top" bgcolor="#E9F0F6">
<iframe width=100% height=100% frameborder=0 marginwidth=0 marginheight=0 scrolling=auto src="gq.htm" name="right">
</iframe></td>
</tr>
</table>
</body>
</html>
gq.htm
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<table>
<tr><td><input type="button"value="按钮1">
<input type="button"value="按钮2">
</td>
</tr>
</BODY>
</HTML>