Highlighted words

i have noticed I keep getting on all my pages ,email included highlighted words,which when the cursor passes over bring up an ad of some sort .How do I get rid it`s very annoying
It says powered by text enhance

 

After a bit of reading from google links the most common thing seems to be firefox users with a vuze toolbar.
Remove toolbar that is installed by Vuzedownload software. and all undeline text disappears :-)
info found here
http://support.mozilla.org/en-US/questions/871383#answer-241702

 

thanks Lazy Dog after a good deal of faffing about I have it sorted ,I have firefox installed but use Chrome 98% of the time and it was showing up in that