/***********************************************

* 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 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 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: 98%;" id="'+divId+'1">'+content[0]+'</div><div class="innerDiv" style="position: absolute; width: 98%; 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

}