function reloadCaptcha() {
    var now = new Date();
    if (document.images) {
        document.images.captcha.src = document.images.captcha.src + 'x';
    }
}

function clickableRowsInit() {
    // for every table row
    var rows = document.getElementsByTagName('tr');
    for ( var i = 0; i < rows.length; i++ ) {
        if ( 'clickable' != rows[i].className) {
            continue;
        }
        if ( navigator.appName == 'Microsoft Internet Explorer' ) {
            // Other browsers are handled by :hover in css
            rows[i].onmouseover = function() {
                this.className += ' hover';
            }
            rows[i].onmouseout = function() {
                this.className = this.className.replace( ' hover', '' );
            }
        }
    }
}