增加一个表格检查!
想增加一个qemail的表格检查,自己增加了一个i2   ,就出错了。。 
 应该怎么改???   
  <script   language=vbscript>  
 function   checkfeed() 
 i1=quest.qname.value 
 i2=quest.qemail.value 
 i3=quest.question.value 
 if   i1= " "   then 
 msgbox "请填写您称呼! " 
 quest.qname.focus 
 if   i2= " "   then 
 msgbox "请填写您电话! " 
 quest.qemail.focus 
 elseif   i3= " "   then 
 msgbox "请填写留言内容! " 
 quest.question.focus 
 elseif   len(i3)> 300   then 
 msgbox "对不起,留言内容不能超过300个字! " 
 quest.question.focus 
 else 
 quest.submit 
 end   if 
 end   function 
  </script>    
  <form   name= "quest "   method= "post "   action= "Message_pass.asp ">  
  <tr>  
  <td   width= "76 "   align= "center "   bgcolor= "B9E0F7 "> 您的姓名: </td>     
  <td   width= "419 "   bgcolor= "B9E0F7 ">     
  <input   name= "qname "   type= "text "   class= "name "   id= "qname "   size= "25 "   maxlength= "10 ">  </td>  
  <p>  
  </tr>  
  <tr>  
  <td   align= "center "   bgcolor= "B9E0F7 "> 您的电话: </td>  
  <td   bgcolor= "B9E0F7 ">  
  <input   name= "qemail "   type= "text "   class= "qemail "   id= "qemail "   size= "25 "   maxlength= "20 ">  </td>  
  </tr>  
  <tr>  
  <td   align= "center "   bgcolor= "B9E0F7 "   valign= "top ">  </p>  
  <p> 请写内容: </td>     
  <td   bgcolor= "B9E0F7 "   width= "419 ">  <textarea   name= "question "   cols= "50 "   rows= "10 "   class= "nr "   id= "question ">  
  </textarea>  </td>  
  </tr>  
  <tr>     
  <td   colspan= "2 "   align= "center "   bgcolor= "B9E0F7 ">        
  <input   name= "ddd "   type= "button "   class= "pass "   onClick= "checkfeed() "   value= "提   交 ">  </td>  
  </tr>  
  </p>  
  </form>  
  </table>  
------解决方案-------------------- <!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>  
  <script language=vbscript>  
 function checkfeed() 
 	i1=quest.qname.value 
 	i2=quest.qemail.value 
 	i3=quest.question.value 
 	if i2 = " " then 
 		msgbox "请填写您电话! " 
 		quest.qemail.focus		 
 	elseif i3 =  " " then 
 		quest.question.focus 
 	elseif len(i3)> 300 then 
 		msgbox "对不起,留言内容不能超过300个字! " 
 		quest.question.focus 
 	end if 
 end function 
  &l