function rand( min, max ) {
    var argc = arguments.length;
    if (argc == 0) {
        min = 0;
        max = 2147483647;
    } else if (argc == 1) {
        throw new Error('Warning: rand() expects exactly 2 parameters, 1 given');
    }
    return Math.floor(Math.random() * (max - min + 1)) + min;
}
function doMarquee(url) {
    var ajax = new Ajax();
    ajax.doGet(url, makeMarquee);
}
function makeMarquee(str) {
    var strArray = str.split("\r\n");
    var num = rand(0, strArray.length - 1);
    var marquee = document.getElementById('marquee');
    var marqueeHTML = '<marquee';
    if ( scrollamount ) {
        marqueeHTML += ' scrollamount="'+scrollamount+'"';
    }
    if ( behavior ) {
        marqueeHTML += ' behavior="'+behavior+'"';
    }
    if ( direction ) {
        marqueeHTML += ' direction="'+direction+'"';
    }
    marqueeHTML += '>'+strArray[num]+'</marquee>';
    marquee.innerHTML = marqueeHTML;
}