I'm not afraid to admit that I am absolutely helpless when it comes to JavaScript. I can't for the life of me write even the simplest of scripts on my own.

What I'm trying to do is replicate the iPhone's keypad screen. So when someone clicks on the number 1 button, a 1 is appended to the input box above. I have it working in jQuery, but the tablet that is displaying the page is slow to react to each button press. I was hoping if I could have the same functionality without having to load jQuery it may speed things up a bit.