Auto adjusting placement of text (below multiline form)

Is there a way to auto move-up or move-down text, depending on the amount of text filled in on multi line form fields. For example, if a user only fills in one line in the multiline form field, then the normal text that follows this should move up so that there is no blank area between the form field and the rest of the normal text. If the user adds a lot of text in the form field (covering many lines), the normal text below the form should automatically move down to allow for more space. Is this possible in pdf type documents?