firefox problems

cheeky chrome

Anyone have any suggestions for how to deal with the following problem? As you can see in the picture below, the wonderful(ly annoying) Chrome advertizement is situated on the page and seems to give the option of sending it to oblivion (i.e. the “x”).

However, the “x” doesn’t work. I hover over it; nothing. If I hover over other things (i.e. my profile thumbnail, the “+Share” button, and even the “install google chrome” button), then all things are normal. But the otherwise useful “x”; useless.  I even tried clicking on “install google chrome” in the hope that feigned interest would assuage pushiness, but no joy.  Any thoughts?