I am trying to figure out how to make a text field that is selected for text entry appear highlighted. I can not figure out how to do this. As an example of what I want to do, you can look at this form: http://www.courtinfo.ca.gov/forms/fillable/ej150.pdf.
There was a topic on this a few months ago I think. Do a forum search for "Highlighting" - it's a thread that started on Mar 23, 2006. I think it will address most of your question, and also point out some of the limitations that you'll face.