function init() {
    var minheight = 500;
    var scrollheight =
        (document.getElementsByTagName('body')[0].scrollHeight - 220);
    if (scrollheight < minheight) {
        scrollheight = minheight;
    };
    document.getElementById('sidebar').style.height = scrollheight + 'px';
    var divs = document.getElementsByTagName('p');
    for (var i=0; i < divs.length; i++) {
        var div = divs[i];
        if (div.className.indexOf('menu-item') > -1) {
            div.onmouseover = function() {
                this.style.backgroundColor = 'white';
            };
            div.onmouseout = function() {
                this.style.backgroundColor = '';
            };
            div.onclick = function() {
                document.location.href =
                    this.getElementsByTagName('a')[0].href;
            };
        };
    };
};