Clear contents of Global Search text box on page load

I have Global Site Search up and running fine. However for some reason i get some text inserted into the text box on page load.

For example, if i click on the "Contact Us" link in the main menu, when that page loads "ontact-us" shows up in the global site search text box. If i click "Store" in the main menu, when that page loads "ore-2" displays in the global site search text box.. Surly there is some code that I can put somewhere to clear the text box on page load.

Thank you.