$(document).ready(function(){
$(".menu > li").click(function(e){
var tabs = Array("tab1","tab2","tab3","tab4");
var targ = e.target.id;
for(i=0;i<4;i++){
(tabs[i] == targ)?$("#"+tabs[i]).addClass("active"):$("#"+tabs[i]).removeClass("active");
(tabs[i] == targ)?$("div."+tabs[i]).fadeIn():$("div."+tabs[i]).css("display", "none");
}
return false;
});
});