I have a minor problem with photoshop. The little window that pops up when I click on the "color" choosing button is halfway above my screen. Here is a screenshot to show what I mean:

As to how it happened, every time I open the color window, it moves up from its original place several pixels. I don't know why it does this. One day I opened it and realized I couldn't drag it down anymore. Now I can't access it properly.
Can anyone help me?