以下是我们中学一个投票的网页，我不能投，为什么？
其中哪条是判断能否投票？哪条是发出投票信息？ <html> <head> <title>上海市延安初级中学 —— 投票</title> <link rel="stylesheet" href="zy.css"> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <script language="JavaScript"> <!-- function vote(obj){ if(obj){ var k=""; for(var i=0;i<obj.elements.length;i++){ if(obj.elements[i].name=="rb"&&obj.elements[i].checked==true) k=obj.elements[i].value; } if(k==""){ alert("请选择一项，再投票"); }else if(confirm("您选择了“"+k+"”\n\n确定吗？")) obj.submit(); else return false; } } //--> </script> </head> <body bgcolor="#FFFFFF" text="#000000" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" background="images/bg.gif" > <table width="760" border="0" cellspacing="0" cellpadding="0" align="center" bgcolor="FFFFE5"> <tr> <td width="760" height="386" valign="top"> <table width="760" border="0" cellspacing="0" cellpadding="0" height="386"> <tr> <td width="760" height="25" bgcolor="79BF19"> <table width="760" border="0" cellspacing="0" cellpadding="0" height="25"> <tr> <td 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action="vote.asp"> <tr bgcolor="#FFFFFF"> <td height="20" colspan="2" > </td> </tr> <tr bgcolor="#FFFFFF"> <td height="20" width="44" align="right">1、</td> <td height="20" width="353"> <input type="radio" name="rb" value="1《亲亲茉莉花》" style="width:12px;height:13px"> 《亲亲茉莉花》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">2、</td> <td width="353" height="20"> <input type="radio" name="rb" value="2《吹牛》 " style="width:12px;height:13px"> 《吹牛》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">3、</td> <td width="353" height="20"> <input type="radio" name="rb" value="3《阳光总在风雨后》 " style="width:12px;height:13px"> 《阳光总在风雨后》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">4、</td> <td width="353" height="20"> <input type="radio" name="rb" value="4《走进新时代》" style="width:12px;height:13px"> 《走进新时代》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">5、</td> <td width="353" height="20"> <input type="radio" name="rb" value="4《朋友》 " style="width:12px;height:13px"> 《朋友》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">6、</td> <td width="353" height="20"> <input type="radio" name="rb" value="6《花》 " style="width:12px;height:13px"> 《花》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">7、</td> <td width="353" height="20"> <input type="radio" name="rb" value="7《炫之舞》" style="width:12px;height:13px"> 《炫之舞》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">8、</td> <td width="353" height="20"> <input type="radio" name="rb" value="8《卖拐之间，诚信再现》" style="width:12px;height:13px"> 《卖拐之间，诚信再现》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">9、</td> <td width="353" height="20"> <input type="radio" name="rb" value="9《秋天的童话》" style="width:12px;height:13px"> 《秋天的童话》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">10、</td> <td width="353" height="20"> <input type="radio" name="rb" value="a《天山的节日》" style="width:12px;height:13px"> 《天山的节日》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">11、</td> <td width="353" height="20"> <input type="radio" name="rb" value="b《街头少年合唱》" style="width:12px;height:13px"> 《街头少年合唱》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">12、</td> <td width="353" height="20"> <input type="radio" name="rb" value="c《大家一起来》 " style="width:12px;height:13px"> 《大家一起来》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">13、</td> <td width="353" height="20"> <input type="radio" name="rb" value="d《中国人，不跪的人》" style="width:12px;height:13px"> 《中国人，不跪的人》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">14、</td> <td width="353" height="20"> <input type="radio" name="rb" value="e《圣诞组曲》" style="width:12px;height:13px"> 《圣诞组曲》 </td> </tr> <tr bgcolor="#FFFFFF"> <td width="44" align="right" height="20">15、</td> <td width="353" height="20"> <input type="radio" name="rb" value="f《黑旋风李逵求职记》" style="width:12px;height:13px"> 《黑旋风李逵求职记》 </td> </tr> <tr bgcolor="#FFFFFF" align="center"> <td colspan="2" height="20"> <table width="68%" border="0" cellpadding="2" cellspacing="1" bgcolor="#0000FF"> <tr bgcolor="#FFFFFF"> <td width="34%" align="right" height="20">学生登录名：</td> <td width="66%" height="20"> <input type="text" name="nick" size="20" maxlength="50" style="width:100px;height:18px"> </td> </tr> <tr bgcolor="#FFFFFF"> <td width="34%" align="right" height="20">学生密码：</td> <td width="66%" height="20"> <input type="password" name="pass" size="20" style="width:100px;height:18px" value=""> <input type="hidden" name="ok2" value="vote"> </td> </tr> </table> </td> </tr> <tr bgcolor="#FFFFFF" align="center"> <td colspan="2" height="20"> <input type="button" name="Submit" value="投 票" onclick="vote(this.form)" style="height:18px;width:80px"> <input type="button" name="Submit2" value="查看结果" onClick="window.open('voteinfo.asp','','')" style="height:18px;width:80px"> <input type="hidden" name="ok" value="vote"> </td> </tr> </form> </table> <br> </td> </tr> </table> </td> </tr> <tr> <td width="760" height="154"> <table width="760" border="0" cellspacing="0" cellpadding="0" height="154" align="center"> <tr> <td width="760" height="10" bgcolor="D3FAA1"> </td> </tr> <tr> <td width="760" height="112" bgcolor="63A909" valign="middle" align="center"> <table width="250" cellspacing="0" cellpadding="0"> <tr> <td height="7" width="250"></td> </tr> </table> <table width="434" cellspacing="3" cellpadding="3" height="83" style="line-height:20px;"> <tr> <td valign="middle"> <div align="center"> <font color="#FFFFFF">版权所有 [上海市延安初级中学] 设计维护 [<a href="http://www.learn-easy.net" target="_blank">上海蓝易思电脑有限公司</a>]<br> 校址：上海市延安西路601号 电话：021-62131008 邮编：200050<br> <font face="Verdana, Arial, Helvetica, sans-serif">Copyright By Yanan Junior School 2004.All Rights Reserved<br> </font></font></div> 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