html - Magento - Images are not showing on Firefox -

on our magento category pages, have added static block @ top. static block contains 3 images.

the 3 images appear on chrome , internet explorer. on firefox, none of images show.

on chrome , ie, code displays 3 images , looks this:

<p> <a href="">     <img width="250px" height="135px"  src="/img1.jpg" /> </a>  <a href="">     <img width="250px" height="135px" src="/img2.jpg" /> </a>  <a href="">     <img width="250px" height="135px" src="img3.jpg" /> </a> </p> 

but on firefox, adds class="qluzuqkroyuyuepwnuwm" on img tags.

<p>     <a href="">     <img class="qluzuqkroyuyuepwnuwm" width="250px" height="135px"  src="/img1.jpg" /> </a>  <a href="">     <img class="qluzuqkroyuyuepwnuwm" width="250px" height="135px" src="/img2.jpg" /> </a>  <a href="">     <img class="qluzuqkroyuyuepwnuwm" width="250px" height="135px" src="/img3.jpg" /> </a> </p> 

i have no idea class or why gets added on there on firefox.

does have ideas on why class gets added on firefox only, , why images don't show?

thank you.

god, idiot.

adblock turned on , blocked images /facepalm

really sorry everyone, thank read post or brief investigation.