<!--
/***********************************************
* 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 scroller(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"></div><div class="innerDiv" style="position: absolute; width: 100%; visibility: hidden" id="'+divId+'2"></div></div>')
  
  var scrollerinstance=this

  setTimeout(function(){scrollerinstance.populate()}, 500);
  
  setTimeout(function(){scrollerinstance.initialize()}, 500)
}

scroller.prototype.populate=function(){
  if ((this.content[0] == undefined) || (this.content[1] == undefined)) {
	  var scrollerinstance=this
	  setTimeout(function(){scrollerinstance.populate()}, 500);  
  } else {
	  this.visiblediv=document.getElementById(this.tickerid+"1");
	  this.hiddendiv=document.getElementById(this.tickerid+"2");
	  this.visiblediv.innerHTML=this.content[0];
	  this.hiddendiv.innerHTML=this.content[1];
	}  
}

// -------------------------------------------------------------------
// initialize()- Initialize scroller method.
// -Get div objects, set initial positions, start up down animation
// -------------------------------------------------------------------

scroller.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(scroller.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
// -------------------------------------------------------------------

scroller.prototype.animateup=function(){
  var scrollerinstance=this
  if (parseInt(this.hiddendiv.style.top)>(this.visibledivtop+1)){
    this.visiblediv.style.top=parseInt(this.visiblediv.style.top)-1+"px"
    this.hiddendiv.style.top=parseInt(this.hiddendiv.style.top)-1+"px"
    setTimeout(function(){scrollerinstance.animateup()}, 25)
  }
  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
// -------------------------------------------------------------------

scroller.prototype.swapdivs=function(){
  var tempcontainer=this.visiblediv
  this.visiblediv=this.hiddendiv
  this.hiddendiv=tempcontainer
}

scroller.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
// -------------------------------------------------------------------

scroller.prototype.setmessage=function(){
  var scrollerinstance=this
  if (this.mouseoverBol==1) //if mouse is currently over scoller, do nothing (pause it)
	setTimeout(function(){scrollerinstance.setmessage()}, 0)
  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()
  }
}

scroller.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
}
//-->
