jQuery animate problem

jQuery animate problem

Hello there,

I'm using the jQuery animate() function to expand a div to a certain size.
Please first check this link to see the problem.

You see 2 divs, the meaning of the divs, is when you click on them they will expand to another size.
The problem is, that the div on the right, expands to the right, and not to the left. The first div is correct.
I saw that you can use the CSS selectors (bottom, top, left, right) to set that direction, but when i use these, the div is placed on the right-edge of the screen, so i cant programm right, because there are different screen sizes, so the webpage isnt correct when another resolution comes in.

Are there any solutions?