javascript - changing position of background image which appears after a hover html/css -


edit: background-position change position of background image. realized actual problem facing else, can seen on thread: background image disappears when changing background-position?

okay have set of links (a href's) inside unordered list, , when user hovers on them, want black background image show on top of link , change links color black. have background image shows photoshoped. here did far

li:hover {     color: white;     background: url(../images/lihover.png); }

now, problem image doesn't show want show. want link in center of image. image 3 pixels below want be. same ever link hover over, image 3 pixels below want be. there way change position of image shows , way move image few pixels above supposed be? (even if cannot css, if can write javascript function can accomplished, great).

the list 

<ul>   <li>item1</li>   <li>item2</li>   <li>item3</li> </ul>

i think mean:

li:hover {   color: white;   background: url(../images/lihover.png) no-repeat center center; }

if doesn't center way want, play center center values x / y (horizontal / vertical). can px,em or % values.


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