Coding in Posts

I finally figured out what the problem with my WP was. I thought it was just being a whore but now I know. It doesn’t like code.

Earlier today I tried to place javascript coding into my DOMAIN page and I got an error that said:

The resource cannot be displayed
The resource you are looking for cannot be opened by your browser.

——————————————————————————–

Please try the following:

Click the Back button to try another link.
Click Search to look for information on the Internet.

HTTP Error 406 – Not acceptable
Internet Explorer

Now, it does the same thing when I try to edit my template thru the editor. What I wanna know is, is there any way to fix this? Because honestly it’s really annoying and it’s stopping me from going further with my site plans.