can any 1 explain how to make a html form readonly when something pops up?
Heh, are you going to ask all your questions in one thread?
What do you mean by something pops up? A window popup?
To make something readonly, set the readOnly property. You may not be able to set the readOnly property for all elements, e.g. a select element.
What you can do, however, is put a transparent div over the form which won't allow interaction with the form.