Here is myjs.js file

myjs.js

if($('#iph_check').next().attr('checked')){


 $('#iph_check').iphoneSwitch("on", 
      function() {
        if($('#iph_check').next().attr('checked')){
         //then checked attribute exist so modify it!
          $('#iph_check').next().prop('checked', !$checkbox[0].checked);
        }else{
          $('#iph_check').next().attr('checked', true);
        }
       },
       function() {
         $('#iph_check').next().attr('checked', false);
       },
       {
         switch_on_container_path: 'iphone_switch_container_off.png'
       });

}else{
 
 $('#iph_check').iphoneSwitch("off", 
     function() {
       if($('#iph_check').next().attr('checked')){
        //then checked attribute exist so modify it!
         $('#iph_check').next().prop('checked', !$checkbox[0].checked);
       }else{
         $('#iph_check').next().attr('checked', true);
       }
      },
      function() {
        $('#iph_check').next().attr('checked', false);
      },
      {
        switch_on_container_path: 'iphone_switch_container_off.png'
      });

}