function initMultiSelect(selector){

$(selector).select2({
placeholder: $(selector).data('placeholder'),
closeOnSelect:false,
allowClear:false,
width:'100%'
});

}

function initSingleSelect(selector){

$(selector).select2({
placeholder: $(selector).data('placeholder'),
allowClear:true,
width:'100%'
});

}

$(document).ready(function(){

$('.select2-multi').each(function(){
initMultiSelect(this);
});

$('.select2-single').each(function(){
initSingleSelect(this);
});

});