jottley

function createElement(tag) {
    return document.createElement(tag);
}

var addOption = function (combo, text, value, selected) {
    /* Note by jdopazo:
     Lazy initialization for the function _add()
     I create a <select> element that I never attach to the dom
     and try to attach an <'option'> element to it with try...catch
     This way I avoid using try...catch every time this function is called */