Absurdity

It has been brought to my attention that the buttons on my site don't actually work in other browsers besides Firefox. I have tested this myself and indeed in Internet Explorer it messes up my form. Now I'm not a big JavaScript expert, I do mostly HTML/CSS and PHP/MySQL work, so I don't really know how to fix this. I got the code off of a Google search, and just implemented it, something I don't usually do. Usually I will take a piece of code and go through it piece by piece so I understand how it works, like I did with the code for my quotes which I took from QNTM. Now I would like to fix it, however I start school in two days, so if I don't get it working Monday/Tuesday it might not happen for a while. I always assumed all the browsers treated JS the same, I mean I knew they treat CSS differently, but I thought that was it. Oh well as this is one big learning process I'm glad I've learned more.