Chosen in Django admin JavaScript

linssen.js

var $chosens = {};

/**
 * Hijacking the pop up script and overwriting it
 */
function showAddAnotherPopup(triggeringLink) {
    var name = triggeringLink.id.replace(/^add_/, '');
    name = id_to_windowname(name);
    href = triggeringLink.href
    if (href.indexOf('?') == -1) {
        href += '?_popup=1';
    } else {
        href  += '&_popup=1';
    }
    var win = window.open(href, name, 'height=500,width=800,resizable=yes,scrollbars=yes');
    win.focus();

    /**
     * Also adding an interval to listen for when the window is closed
     * then we can fire an update on the chosen objects
     */
    var unloadInterval = setInterval(function() {
        if (!win || win.closed) {
            clearInterval(unloadInterval);
            $chosens.trigger('liszt:updated');
        }
    }, 250);

    return false;
}

$(document).ready(function() {
    $chosens = $("select[multiple='multiple']");
    var $add_another = $('a.add-another');

    if ($chosens.length < 1) return false

    $chosens
        .width('50%')
        .chosen();
});