title: Format textbox with numbers OnfocusOut / OnBlur
body: <p>I have a usercontrol Textbox that only allows numbers:</p>
  
  <pre><code>&lt;it:CurrencyTextBoxControl_v2
        ID="txtCreditLimit" IsRequired="true"
        ShowCurrency="true"
        DecimalPlaces="2"
        OnBlur="formatNumbers();"
        CssClass="txtBoxCSS txtBoxCurrency"
        Label="&lt;%$FrontEndResources:BackOffice,CreditOfLimit%&gt;"
       runat="server" /&gt;`
  </code></pre>
  
  <p>All i want it to do is whenever you click outside of the textbox it formats the numbers like this: 
  You enter: 10000000000 when you focus out it should appear: 100 000 000,00</p>
  
  <p>every 3 numbers 1 space and the last two with a "," (comma) or a "." (dot)</p>
  
  <p>Any idea? thanks in advance.</p>
  
  <p><strong>Update</strong></p>
  
  <p>I tried this:</p>
  
  <pre><code>formatCurrency() { $('#txtCreditLimit').mask("#.##0,00", { reverse: true }); }
  </code></pre>
  
  <p>but it says: 
  "The object does not support property or method ' mask'"</p>