title: Content jumps around on inserting or updating TextBoxes/DropDownList
body: <p>My .aspx form dances around when I tab from a textBox to another textBox, but the worst jumping around occurs when I tab to or from a DropDownList.</p>
  
  <p>All I have is few textboxes. nothing complex, no gridviews, no labels.</p>
  
  <p>What am I doing wrong?</p>
  
  <p>IE8 .NET 3.5 </p>
  
  <p>&lt;%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Requestor.aspx.vb" Inherits="RCCRSAdmin.Requestor"  MasterPageFile="~/RCCRS.Master" %>
  &lt;%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
  
  </p>
  
  
  
      
      
      
  
  Requestor 
  
  
  
  
  
  
  
      
      
      
      Centre
      
      
      
      
      
      
      Username
      
      
      
      
          
      
      --%>
      
      
      
      User Type
       
      
       
      
         
  
      
      
      Staff No
      
      
      
      
      
          
      
      --%>
      
      
       
  
      
      
      Password
      
      
      
      
          
      
      
          
      
      Forename 
               
      
      
          
      
      
      
      
      Surname
      
      
      
          
      
         
      
      
      Email 
               
      
      
          
      
      
      
      
      Mobile
      
      
      
          
      
       
      
      
      Tel Office 
               
      
      
          
      
      
      
  
       
  
      
      
      
      
                     &nbsp;
                                 &nbsp;&nbsp;                
                                 &nbsp;&nbsp;         
                            
      
  
  
  
  
  
  <p>
    </p>