Help!

Something has happened to my mouse, and I don't know how to fix this. I think Ivy may have pushed some buttons or something when I wasn't looking.

I can no longer right click. I'll usually right click a link and chose 'Open in new tab', only the option box won't pop up at all. Also, my left click only works on the IE page - for clicked on 'Start' (which worked) and tried to go to the Control Panel to see if I could fiddle with the mouse settings, and I keep clicking on the control panel and it won't open. Nothing, whether I try right or left clicking.

Even the little bar at the top, with File, Edit, View, Favorites, Tools, Help...I try to click on them and I get a weird 'boink' sound and it won't click.

I can click on Search & Favorites in the tool bar, but it opens up as a blank white scree. 

I don't know what to do! And this is my mom's puter, too, so I'm in trouble if I can't fix the thing. Please help if you have any clue!