Compensate for mouse position if page is resized from default.

Compensate for mouse position if page is resized from default.

Hi,

New to jquery,

I am using mouse x,y onclick in one div (if mouse is in one set of coordinate range) to determine whether or not to show/hide another div, and am stumped as to how to compensate for the user changing page size, as the coordinates change.  Is there an absolute xy, regardless of page/text size, or code to compensate for it?  What is going on here is I have flash that I have no control over (wix) and I need to show Html (which wix doesn't), so I am having to determine if the user is over a certain button in the swf which I put in a div to give me some control over the flash. I'm using on click to bring the HTML to the front in a certain position, while the flash does its animation thing. 

Thanks,

Bill