iBook - Click Pad is Sticking!

Hi. My click pad is sticking, and I think it is because of hardware, not software, but I'm not sure. When I click a button, for example, nothing will happen and I will have to click many times before it accepts the click. I can also click the scroller on the side of a browser window and run into the same problem. It will even stay stuck on a previous click I made, and I have to click on an empty area in a browser window many, many times to get it unstuck. How can I fix this?! Is there a way for me to clean under the click/touch pad? Thanks!