/***********************************************
* 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
	var divString = '<div id="'+divId+'" class="'+divClass+'" style="position: relative; overflow: hidden">';
	divString += '<div class="innerDiv" style="position: absolute; width: 100%" id="'+divId+'1">'+content[0]+'</div>';
	if(typeof(content[1]) != 'undefined') {
		divString += '<div class="innerDiv" style="position: absolute; width: 100%; visibility: hidden" id="'+divId+'2">'+content[1]+'</div>';
	}
	divString += '</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>')
	document.write(divString);
	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)
    var width = this.tickerdiv.offsetWidth - (this.visibledivtop * 2) + "px";
    //this.visiblediv.style.width = this.hiddendiv.style.width = this.tickerdiv.offsetWidth - (this.visibledivtop * 2) + "px"
    this.visiblediv.style.width = width;
    if (this.hiddendiv) this.hiddendiv.style.width = width;
    this.getinline(this.visiblediv, this.hiddendiv)
    //this.hiddendiv.style.visibility = "visible"
    if (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 (this.hiddendiv && 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){
    if(div1){
        div1.style.top=this.visibledivtop+"px";
        if(div2) 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
		if(this.hiddendiv) 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
}