Q:

How to make a readonly text box editable on mouse-over using J query

I have a read-only text-box with text in it.  How to  make it editable on mouse-over using J query ? 

A:

You could do something like this:
$('#textbox_id').mouseover(function(){
  $(this).removeAttr('readonly');
});

Where textbox_id is the id of the text box. 
More Info:

http://api.jquery.com/removeAttr/
http://api.jquery.com/mouseover/

