Transcript Search

When I search for a word, it begins the search from wherever the cursor is in the transcript. If I want to search from the top of the script, I have to delete the search box, put the cursor at the first line of the transcript, and then search. It would be great if I could type in the word, then move the cursor where I want to search from and it automatically does it. 

It would also help if the up and down arrows for 'find next' would never get to the end; so if I'm at the end of a script and I hit down, it takes me back to the very top of the script.

Thank you!