/**
 * Pausing up-down scroller- © Dynamic Drive (www.dynamicdrive.com)
 * This notice MUST stay intact for legal use
 * Visit http://www.dynamicdrive.com/ for this script and 
 */

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: 20px;" id = "' + divId + '1">' + content[0] + '</div><div class = "innerDiv" style = "position: absolute; width: 10px; 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();
	}
}

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