title: How to make textbox half readonly
body: <p>I have a question about a textbox in asp.net. I have an text for example : P-70101002-00089-0, and I want that just this part : "70101002" to be readonly and the other part the users to have the ability to edit.
  The template is always the same just the numbers change.
  Is there any opportunity to make it with asp.net or any javascript?
  Thank you</p>