<select> without multiple might have multiple selected options

[savvan0h]

selected can be set to multiple select options even if the select is not multiple if you choose an option more than once.
I think clickedOption.attr('selected', 'selected'); below should be replaced with select.val(clickedOption.val()); so only one option has selected .

      if(multiselect){
       ...
      }else{
        buttonsHtml.find('a, span').removeClass('picked');
        $(this).addClass('picked');
        clickedOption.attr('selected', 'selected'); // should be select.val(clickedOption.val());
      }