javascript的一个选择的问题
<!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>
<form id="form1" name="form1" method="post" action="">
<tr>
<td>
<input type="radio" id="rd1" name="intent" value="出租" onclick="radioClick(),demo()">出租</td>
</tr>
<tr>
<td>
<input type="radio" id="rd3" name="intent" value="求租" onclick="radioClick(),demo()">求租</td>
</tr>
</br>
<tr>
<td height="17" valign="bottom" bgcolor="b7d3fc" class="b1"> <span class="bt">发布者身份
<label>
</br>
<input type="radio" name="listerStatus" value="业主出租" />
业主出租</label>
<br />
<label>
<input type="radio" name="listerStatus" value="业主出售" />
业主出售</label>
<br />
<label>
<input type="radio" name="listerStatus" value="承租人自用" />
承租人自用</label>
<br />
<label>
<input type="radio" name="listerStatus" value="承租后合租" />
承租后合租</label>
<br />
<label>
<input type="radio" name="listerStatus" value="承租后转租" />
承租后转租</label>
<br />
<label>
</BODY>
</HTML>
要求:
选择出租,只能选择"业主出租"和"业主出售",
选择求租,只能选择“业主出租”和“承租后合租” ,其它的不能选,