Are you looking to change the text on the buttons? There would different ways of doing it, the easiest way would be to do a search and replace. This syntax is as follows:
replace("original text", "new text");
You can also target a specific section of the page using
document.gElementById("elementIdName")
So, put together it would be
document.gElementById("elementIdName").innerHTML.replace("original text", "new text");
If you seems to complex, feel free to contact me and I can set this up for you.
DotCreativity Web Design Services
http://www.dotcreativity.com
Email: ideas@dotcreativity.com