I don't know much about javascript so this may be an obvious question or one that's impossible, but...

I want to have a button (in the middle of another form) that, when clicked, downloads a URL and shows the content to the user.) (Well it's okay if it doesn't download the page... I just want the request sent.)

Basically I want a button that resets a field in a SQL database (I have a PHP script to do it) and I want to have it done w/out displaying another webpage. I was thinking maybe loading a new .js file (which would be my php script is disguise) when the button is clicked, but I can't figure out how to do that either.