/*
DOMnews 1.0 
homepage: http://www.onlinetools.org/tools/domnews/
released 11.07.05
*/

/* Variables, go nuts changing those! */
// initial position 
var dn_startpos = 120;
// end position
var dn_endpos = -300;
// Speed of scroller higher number = slower scroller 
var dn_speed = 50;
// ID of the news box
var dn_newsID = 'news';
// class to add when JS is available
var dn_classAdd = 'hasJS';
// Message to stop scroller
var dn_stopMessage = 'Stop scroller';
// ID of the generated paragraph
var dn_paraID = 'DOMnewsstopper';

/* Initialise scroller when window loads */
window.onload = function () {
    // check for DOM
    if (!document.getElementById || !document.createTextNode) { return; }
    initDOMnews();
    // add more functions as needed
}
/* stop scroller when window is closed */
window.onunload = function () {
    clearInterval(dn_interval);
}

/*
This is the functional bit, do not press any buttons or flick any switches
without knowing what you are doing!
*/

var dn_scrollpos = dn_startpos;
/* Initialise scroller */
function initDOMnews() {
    var n = document.getElementById(dn_newsID);
    if (!n) { return; }
    n.className = dn_classAdd;
    dn_interval = setInterval('scrollDOMnews()', dn_speed);
    var newa = document.createElement('a');
    var newp = document.createElement('p');
    newp.setAttribute('id', dn_paraID);
    newa.href = '#';
    newa.appendChild(document.createTextNode(dn_stopMessage));
    newa.onclick = stopDOMnews;
    newp.appendChild(newa);
    n.parentNode.insertBefore(newp, n.nextSibling);
    n.onmouseover = function () {
        clearInterval(dn_interval);
    }
    n.onmouseout = function () {
        dn_interval = setInterval('scrollDOMnews()', dn_speed);
    }
}

function stopDOMnews() {
    clearInterval(dn_interval);
    var n = document.getElementById('news');
    n.className = '';
    n.parentNode.removeChild(n.nextSibling);
    return false;
}
function scrollDOMnews() {
    var n = document.getElementById(dn_newsID).getElementsByTagName('ul')[0];
    n.style.top = dn_scrollpos + 'px';
    if (dn_scrollpos == dn_endpos) { dn_scrollpos = dn_startpos; }
    dn_scrollpos--;
}