http://justtesting.atspace.com/

To the left, outside the big div, you have four different colored divs. When you hover over any of them, a text will appear in firefox and explorer.

BUT, if you try it out in explorer, you will notice that the upper border for the blue div dissappears when you select any text within the big div, or when you mouse over any of the colored divs.

In firefox it works fine though...

What is wrong?!