/**
 * Created by Simon on 09.05.2017.
 */
function hasClass( el, className ) {
    "use strict";
    /*Check if it has a certain class*/
    if ( el.classList ) {
        /*Get all classes and check for the given one*/
        return el.classList.contains( className );
    } else {
        /**/
        return !! el.className.match( new RegExp( "(\\s|^)" + className + "(\\s|$)" ) );
    }
}

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

function removeClass( el, className ) {
    "use strict";
    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, " " );
    }
}