jquery function call multiple times on class name need to prevent -


i need call js function on list item click when event fires calls event number of times

js 

$('.first').click(function () {      //remove previous class , add clicked tab     items.removeclass('current');     $(this).addclass('current');      $('#v-nav>div.tab-content').hide().eq(items.index($(this))).show();      window.location.hash = $(this).attr('tab'); });

html

<div id="v-nav">                 <ul>                      <li tab="tab1" class=" first cmcltabcss  current "> <span class="spn_inercom"> commercial sector </span> <span class="tab1current spn_nmbr"> </span></li>                     <li tab="tab2" class="first dmtabcss"><span class="spn_inerdip">diplomatic missions</span><span class="tab1currentd spn_nmbr"></span></li>                     <li tab="tab3" class="first govtabcss"><span class="spn_inergov">government sector</span><span class="tab1currentg spn_nmbr"></span></li>                     <li tab="tab4" class="first wrldtabcss"><span class="spn_inerwld">outside kingdom</span><span class="tab1currentw spn_nmbr"> </span></li>                     <li tab="tab5" class="first imgtabcss"><span class="spn_inerimg">images</span><span class="tab1currenti spn_nmbr"> </span></li>                     <li tab="tab6" class="first"><span class="spn_inernews">news archive</span><span class="tab1currentn spn_nmbr"> </span></li>                      <li tab="tab7" class="first ppltabcss"><span class="spn_inerindual">site users</span><span class="tab1currentindual spn_nmbr"></span></li>                  </ul> </div>

the code provided correct. check out here: jsfiddle

there must other part of code triggers click handler multiple times.

for problem described code job (omitted specific code clarity):

$('.first').click(function () {     $('.first').removeclass('current');     $(this).addclass('current');     window.location.hash = $(this).attr('tab'); });

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