Hello buddies, for a second day I'm trying to find out how to work with jQuery UI Icons, but I can't, because they actually have problems with Firefox, obviously.
When I open the Themeroller webpage by clicking on "Themes" in the navigation of jQuery UI page and I scroll down - I see grey squares. When I go over them with the cursor, they appear. And now the interesting part - when I refresh the page (with ctrl+r, if it matters) when it's scrolled down to the icons and they are in the visible part of the screen - they are still grey squares. When I scroll up and down again - they appear without mouse over. Sometimes (I cannot "catch" exactly when) it all turns around - they appear normally and become grey squares only on mouse over.
Is it a known problem with Firefox, or am I doing something wrong?
Edit: I just saw the same problem with Chrome, I'm attaching a screenshot!!!