select - jquery chosen: how to onClick for a special option -

i'm using jquery chosen create multiple select box. problem is, third option must open new window , must not select. (later user can create new option in window)

can me realize this? idea use $('.chosen-select').on('change'...) , remove selected item list. don't know how

<div class="wrapper">   <select data-placeholder="options" style="width:350px;" multiple class="chosen-select">      <option value=""></option>      <option value="1">1</option>      <option value="2">2</option>      <option value="3" onclick="openpopup()">3</option>  </select> </div> 

thank you!

if understood right should solve problem:

$('.chosen-select').on('mouseup', function(){ // on finish click on part of multiselect    if($(this).val().indexof('3') !== -1){ // if value has 3 selected [1,3]       openpopup(); // open popup    } }); 

but if want work on option 3 can this

$('.chosen-select').on('mouseup','.openpopup', function(){ // on finish click on option of class openpopup    if($(this).val() == 3){       openpopup(); // open popup    } }); 

as removal:

$('.chosen-select').on('mouseup','.openpopup', function(){ // on finish click on option of class openpopup    if($(this).val() == 3){       openpopup($(this)); // open popup    } });  function openpopup(obj){     //popup functions...     obj.remove(); } 

this should solve problem