可以指定那几列隐藏，点击出现
<script language="javascript">
 function ShowHide(types){
 var str="";
 if(types==0){
 str="none";
 }
 if(typeof(eyhc.length)=="undefined"){
 eyhc.style.display=str;
 }else{
 for(i=0;i<eyhc.length;i++){
 eyhc[i].style.display=str;
 }
 }
 }
 </script>
 <table width="100%" border="0" cellspacing="0" cellpadding="0">
 <tr>
 <td width="371"><input type="button" value="显示" οnclick="ShowHide(1)">
 <input type="button" value="隐藏" οnclick="ShowHide(0)"> </td>
 <td width="393" bgcolor="#FF0000"> </td>
 <td width="67" bgcolor="#FFFF00" id="eyhc" style="display:"> </td>
 <td width="67" bgcolor="#0000FF" id="eyhc" style="display:"> </td>
 <td width="67" bgcolor="#00FFFF"> </td>
 <td width="67" bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td width="68" bgcolor="#990000" id="eyhc" style="display:"> </td>
 </tr>
 <tr>
 <td> </td>
 <td bgcolor="#FF0000"> </td>
 <td bgcolor="#FFFF00" id="eyhc" style="display:"> </td>
 <td bgcolor="#0000FF" id="eyhc" style="display:"> </td>
 <td bgcolor="#00FFFF"> </td>
 <td bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td bgcolor="#66FF00" id="eyhc" style="display:"> </td>
 <td bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td bgcolor="#990000" id="eyhc" style="display:"> </td>
 <td bgcolor="#990000" id="eyhc" style="display:"> </td>
 </tr>
 </table>