/***********************************************
* Pausing up-down scroller- © Dynamic Drive (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* http://www.dynamicdrive.com/dynamicindex2/crosstick.htm
* Visit http://www.dynamicdrive.com/ for this script and 100s more.
***********************************************/
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 milliseconds.
	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 = 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();
	}
	// Round Top Corners of divNewsItemTitle
	Nifty("div.divNewsItemTitle", "top transparent");
	// Round Bottom Corners of divNewsItemTeaser
	Nifty("div.divNewsItemTeaser", "bottom transparent");
};
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;
	}
};