enabling one textbox when content of another textbox changes
<p><strong>I have three text boxes on a form, the default behavior is that the first textbox is enabled but the other two are not. I would like to enable the second text boxes as soon as I start typing in the first textbox or once some text is copied into the first text box.
I have the code below on my form, but it only help with enabling the next text box once I start typing into the textbox before. It does not help/respond when i copy and past the content. Kindly help...</strong></p>

<pre><code>function EnableCopyUsageField(currentField)
{   
   var txtOldItem2 = $get('&lt;%=txtOldItem2.ClientID%&gt;');
   var txtOldItem3 = $get('&lt;%=txtOldItem3.ClientID%&gt;');

   if(currentField == "txtOldItem1")
   {
    txtOldItem2.disabled = false;
    txtOldItem2.style.backgroundColor ='White';
   }

    if(currentField == "txtOldItem2")
    {
    txtOldItem3.disabled = false;
    txtOldItem3.style.backgroundColor ='White';   
    }
}
</code></pre>

<p>enabling one textbox when content of another textbox changes</p>
