/**
 * Created by Simon on 09.05.2017.
 */

function hasClass(el, className) {
    if (el.classList)
        return el.classList.contains(className);
    else
        return !!el.className.match(new RegExp('(\\s|^)' + className + '(\\s|$)'))
}

function addClass(el, className) {
    if (el.classList)
        el.classList.add(className);
    else if (!hasClass(el, className)) el.className += " " + className
}

function removeClass(el, className) {
    if (el.classList)
        el.classList.remove(className);
    else if (hasClass(el, className)) {
        var reg = new RegExp('(\\s|^)' + className + '(\\s|$)');
        el.className = el.className.replace(reg, ' ')
    }
}