// Accessible Scroller by Mike Foskett (http://www.websemantics.co.uk/). Retain this message and you may use the code freely.

var speed=30        // speed of scroller
var step=1          // smoothness of movement
var top="#ticker_container"      // name of anchor used as page top when clicking start / stop / show
var Start= "Start"  // Text for start link
var Stop = "Stop"   // Text for stop link
var Show = "Show"   // Text for show link

var x, scroll, divW, sText=""

function onclickIE(idAttr,handler,call){
  if ((document.all)&&(document.getElementById)){idAttr[handler]=new Function(call)}
}

function addLink(id,call,txt){
  var e=document.createElement('A')
  e.setAttribute('href',top)
  e.setAttribute('onclick',call)
  var linktext=document.createTextNode(txt)
  e.appendChild(linktext)
  document.getElementById(id).appendChild(e)
}
/*
function addControls(){
  addLink('controls','clickAction(0)',Stop)
  onclickIE(document.getElementById('controls').childNodes[0],"onclick",'clickAction(0)')
  document.getElementById('controls').appendChild(document.createTextNode(' | '))
  addLink('controls','clickAction(2)',Show)
  onclickIE(document.getElementById('controls').childNodes[2],"onclick",'clickAction(2)')
}
*/
function stopScroller(){clearTimeout(scroll)}
/*
function setAction(node,callvalue,txt){
  var c=document.getElementById('controls')
  c.childNodes[node].setAttribute('onclick','clickAction('+callvalue+')')
  onclickIE(document.getElementById('controls').childNodes[node],"onclick",'clickAction('+callvalue+')')
  c.childNodes[node].firstChild.nodeValue=txt
}
*/
function clickAction(no){
  switch(no) {
    case 0:
      stopScroller()
      setAction(0,1,Start)
      setAction(2,2,Show)
      break
    case 1:
      startScroller()
      setAction(0,0,Stop)
      setAction(2,2,Show)
      break
    case 2:
      stopScroller()
      setAction(0,1,Start)
      setAction(2,3,Start)
      x=0
      document.getElementById('tag').style.whiteSpace='normal'
      document.getElementById('tag').style.left='0px'
      break
    case 3:
      startScroller()
      setAction(0,0,Stop)
      setAction(2,2,Show)
      x=divW
      document.getElementById('tag').style.left=x+'px'
  }
}
  
function startScroller(){
  document.getElementById('tag').style.whiteSpace='nowrap'
  var p=document.createElement('P')
  p.id='testP'
  p.style.fontSize='25%' //fix for mozilla. multiply by 4 before using

  var wtag = document.getElementById('tag');
  var wdtag = (wtag.offsetWidth)?(wtag.offsetWidth):(wtag.clientWidth)
  
  if(x<-(wdtag*5)) {x = xdw;}
  x-=step
  if (document.getElementById('tag').className) p.className=document.getElementById('tag').className
  p.appendChild(document.createTextNode(sText))
  document.body.appendChild(p)
  pw=(p.offsetWidth)?(p.offsetWidth):(p.clientWidth)
  document.body.removeChild(p)
  if (x<(pw*5)*-1){x=divW;}
  document.getElementById('tag').style.left=x+'px'
  scroll=setTimeout('startScroller()',speed)
}
var xdw = 0;
function initScroller(){
  if (document.getElementById && document.createElement && document.body.appendChild) {
  
	var ptick = repeatLabelBlock(document.getElementById('tag'));
	document.getElementById('tag').innerHTML = ptick;
  
  //addControls()
    document.getElementById('controls').style.display='none'
    divW = (document.getElementById('scroller').offsetWidth)?(document.getElementById('scroller').offsetWidth):(document.getElementById('scroller').clientWidth)
    x=divW
	xdw = x
    document.getElementById('tag').style.position='relative'
    document.getElementById('tag').style.left=divW+'px'
    var ss=document.getElementById('tag').childNodes
    for (i=0;i<ss.length;i++) {sText+=ss[i].nodeValue+" "}
    scroll=setTimeout('startScroller()',speed)
  }
}

function repeatLabelBlock(divtick)
{
	var arrLabels = divtick.getElementsByTagName("LABEL");
	var ptick = "";
	if(arrLabels && arrLabels.length > 0)
	{
		var i = 0;
		var it = 0;
		var iter = 3;
		for(i = 0; i < arrLabels.length+1 ; i++)
		{
			if(i == arrLabels.length)
			{
				i = 0;
				it++;
			}
			if(it == iter)
				break;
			ptick += getOuterHTML(arrLabels[i]);
		}
	}
	else
	{
		ptick = divtick.innerHTML;
	}
	return ptick;
}
function getOuterHTML(object) {
var element;
if (!object) return null;
element = document.createElement("div");
element.appendChild(object.cloneNode(true));
return element.innerHTML;
}

function addLoadEvent(func) {
  if (!document.getElementById | !document.getElementsByTagName) return
  var oldonload = window.onload
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload()
      func()
    }
  }
}

addLoadEvent(initScroller)