//var xmlDoc = null;
//var pausecontent = new Array();
//pausecontent[0] = 'Initializing...';
// Start
/*
loadXML('nieuws.xml');

function loadXML(file)
{
	// IE
	if (window.ActiveXObject)
	{
		xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
		xmlDoc.async = false;
		xmlDoc.load(file);
		readXML();
	}
	// Mozilla, Firefox, Opera, etc.
	else if (document.implementation && document.implementation.createDocument)
	{
		xmlDoc = document.implementation.createDocument("", "", null);
		xmlDoc.load(file);
		xmlDoc.onload = readXML;
	}
}

function readXML()
{
    var items = xmlDoc.getElementsByTagName("vacature");
	var totalItems = items.length;
	
	if (totalItems > 0)
	{
		for (var i=0; i<totalItems; i++)
		{
			pausecontent[i] = '<a href="' + items[i].getElementsByTagName("url")[0].childNodes[0].nodeValue + '">' + 
							  items[i].getElementsByTagName("title")[0].childNodes[0].nodeValue + 
							  '</a><br/>' + items[i].getElementsByTagName("location")[0].childNodes[0].nodeValue;
		}
	}
	else
	{
		pausecontent[0] = 'Geen vacatures gevonden...';	
	}
}
*/
function pausescroller(content, divId, divClass, delay)
{
	this.content=content //message array content
	this.tickerid=divId //ID of ticker div to display information
	this.delay=delay //Delay between msg change, in miliseconds.
	this.mouseoverBol=0 //Boolean to indicate whether mouse is currently over scroller (and pause it if it is)
	this.hiddendivpointer=1 //index of message array for hidden div
	document.write('<div id="'+divId+'" class="'+divClass+'" style="position: relative; overflow: hidden"><div class="innerDiv" style="position: absolute; width: 100%" id="'+divId+'1">'+content[0]+'</div><div class="innerDiv" style="position: absolute; width: 100%; visibility: hidden" id="'+divId+'2">'+content[1]+'</div></div>')
	var scrollerinstance=this
	if (window.addEventListener) //run onload in DOM2 browsers
	window.addEventListener("load", function(){scrollerinstance.initialize()}, false)
	else if (window.attachEvent) //run onload in IE5.5+
	window.attachEvent("onload", function(){scrollerinstance.initialize()})
	else if (document.getElementById) //if legacy DOM browsers, just start scroller after 0.5 sec
	setTimeout(function(){scrollerinstance.initialize()}, 500)
}

// -------------------------------------------------------------------
// initialize()- Initialize scroller method.
// -Get div objects, set initial positions, start up down animation
// -------------------------------------------------------------------

pausescroller.prototype.initialize = function() 
{
	this.tickerdiv=document.getElementById(this.tickerid)
	this.visiblediv=document.getElementById(this.tickerid+"1")
	this.hiddendiv=document.getElementById(this.tickerid+"2")
	this.visibledivtop=parseInt(pausescroller.getCSSpadding(this.tickerdiv))
	//set width of inner DIVs to outer DIV's width minus padding (padding assumed to be top padding x 2)
	this.visiblediv.style.width=this.hiddendiv.style.width=this.tickerdiv.offsetWidth-(this.visibledivtop*2)+"px"
	this.getinline(this.visiblediv, this.hiddendiv)
	this.hiddendiv.style.visibility="visible"
	var scrollerinstance=this
	document.getElementById(this.tickerid).onmouseover=function(){scrollerinstance.mouseoverBol=1}
	document.getElementById(this.tickerid).onmouseout=function(){scrollerinstance.mouseoverBol=0}
	if (window.attachEvent) //Clean up loose references in IE
	window.attachEvent("onunload", function(){scrollerinstance.tickerdiv.onmouseover=scrollerinstance.tickerdiv.onmouseout=null})
	setTimeout(function(){scrollerinstance.animateup()}, this.delay)
}


// -------------------------------------------------------------------
// animateup()- Move the two inner divs of the scroller up and in sync
// -------------------------------------------------------------------

pausescroller.prototype.animateup = function()
{
	var scrollerinstance=this
	
	if (parseInt(this.hiddendiv.style.top)>(this.visibledivtop+5))
	{
		this.visiblediv.style.top=parseInt(this.visiblediv.style.top)-5+"px"
		this.hiddendiv.style.top=parseInt(this.hiddendiv.style.top)-5+"px"
		setTimeout(function(){scrollerinstance.animateup()}, 50)
	}
	else
	{
		this.getinline(this.hiddendiv, this.visiblediv)
		this.swapdivs()
		setTimeout(function(){scrollerinstance.setmessage()}, this.delay)
	}
}

// -------------------------------------------------------------------
// swapdivs()- Swap between which is the visible and which is the hidden div
// -------------------------------------------------------------------

pausescroller.prototype.swapdivs = function()
{
	var tempcontainer=this.visiblediv
	this.visiblediv=this.hiddendiv
	this.hiddendiv=tempcontainer
}

pausescroller.prototype.getinline = function(div1, div2)
{
	div1.style.top=this.visibledivtop+"px"
	div2.style.top=Math.max(div1.parentNode.offsetHeight, div1.offsetHeight)+"px"
}

// -------------------------------------------------------------------
// setmessage()- Populate the hidden div with the next message before it's visible
// -------------------------------------------------------------------

pausescroller.prototype.setmessage = function()
{
	var scrollerinstance=this
	if (this.mouseoverBol==1) //if mouse is currently over scoller, do nothing (pause it)
		setTimeout(function(){scrollerinstance.setmessage()}, 100)
	else{
		var i=this.hiddendivpointer
		var ceiling=this.content.length
		this.hiddendivpointer=(i+1>ceiling-1)? 0 : i+1
		this.hiddendiv.innerHTML=this.content[this.hiddendivpointer]
		this.animateup()
	}
}

pausescroller.getCSSpadding = function(tickerobj)
{ //get CSS padding value, if any
	if (tickerobj.currentStyle)
		return tickerobj.currentStyle["paddingTop"]
	else if (window.getComputedStyle) //if DOM2
		return window.getComputedStyle(tickerobj, "").getPropertyValue("padding-top")
	else
		return 0
}