javascript - how to remove css property "element{}" -


click link: the first prt scr can see play , mute buttons.

click link: the second prt scr can't see background image, still javascript working!

where gone background image? how can remove "element" property? 

element {     background: transparent url("../images/unmute.png") repeat scroll 0% 0%; }  button#mutebtn {     background: transparent url("../images/unmute.png") repeat scroll 0% 0%; }

this how can remove attribute jquery:

 element.removeattribute(attributename)

check link more info.


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