想要实现这么个功能:

选左边的下拉菜单, 右边就能出现相应的表单
<form enctype="multipart/form-data" method='post' action='givesub.php'>
 <select name='fid'>
        <option value='0' selected>请选择栏目</option>
        <option value='zhuti'>主题文字</option>
        <option value='dongtai'>业内动态</option>
        <option value='jingpin'>精品推荐</option>
      </select>
    </td>
     <td colspan='2'> 标　题 <input type='text' name='title'></td>
   <tr><td width='20%' rowspan='3'> </td><td colspan='2'>内　容<br>
          <textarea name='content' cols='50' rows='10'></textarea></td></tr>
   
    <tr><td><div align='center'><input type='submit'  value='Send files'>
        　　　
        <input type='reset' value='reset'></div></td>
      　 </tr>
</form>

你说的很对(选择不同的下拉  则显示不同的表单)
我没用过,就想用JS来实现

[CODE]<table width=500 border=1><tr><td width=30% > <form name=form1> <select name="select" onchange="show()" > <option value="aa">11111</option> <option value="bb">8888</option> <option value="cc">eer</option> </form> </td> <td> <span id=gzs style="display:none"> <table><tr><td> title:<input type=text name=tit><br> content:<input type=text name=con> </td></tr></table> </span> <p id=gzp style="display:none"> <table><tr><td> tit<input type=text name=tit><br> con<input type=text name=con> </td></tr></table> </p> </td> </table> <script language="javascript"> function show(){ if(document.form1.select.value=="bb"){ document.getElementById("gzs").style.display=""; document.getElementById("gzp").style.display="none"; } if(document.form1.select.value=="cc"){ document.getElementById("gzp").style.display=""; document.getElementById("gzs").style.display="none"; } if( document.form1.select.value=="aa"){ document.getElementById("gzp").style.display=""; document.getElementById("gzs").style.display="none"; }

} </script>[/CODE]