New banner link

Hello All, I have a question/problem. I recently made a banner with some scripting on (release) { getURL(“index.html”,“mainframe”); } the only problem is it opens my “index.html” page in a new tab/window. I have exported my button as .swf and am using dreamweaver to code the html. Any ideas on how to make the button return to the homepage without opening new windows/tabs. Mawnster