javascript - jQuery not changing the background -

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my html code is:

<ul class="nav">         <li class="nav-one" ><span class="righttab activeright">&nbsp;</span><span class="lefttab activeleft">&nbsp;</span><a href="#featured" class="current">featured</a></li>         <li class="nav-two" ><span class="righttab" id="rightnav2">&nbsp;</span><span class="lefttab" id="leftnav2">&nbsp;</span><a href="#core" >core</a></li>         <li class="nav-three" ><span class="righttab" id="rightnav3">&nbsp;</span><span class="lefttab" id="leftnav3">&nbsp;</span><a href="#jquerytuts" >jquery</a></li>         <li class="nav-four last" ><span class="righttab" id="rightnav4">&nbsp;</span><span class="lefttab" id="leftnav4">&nbsp;</span><a href="#classics" >classics</a></li> </ul>

and jquery code is:

    jquery(".nav-two").hover(function() {        $('#rightnav2').css("background-image", "url(/skin/frontend/unleaded/worldeffect/images/tabover1-right.jpg)");         $('#leftnav2').css("background-image", "url(/skin/frontend/unleaded/worldeffect/images/tabover1-left.jpg)");      });

this supposed change background image when rollover mouse. can tell me doing wrong?

the common usage of .hover pass 2 functions it: first mouse enter , second mouse leave. if pass 1 function, have there, executed both events, , handler should interrogate event object decide do. so, if intention have background image change when mouse on , revert when mouse out, should provide second function setting background image ''.


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