/***********************************************
* 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.
* 
*
*extended for vertical scrolling by Marco Huber
***********************************************/

function pausescroller(content, divId, divClass, delay, speed, direction, style){
  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.speed=speed //higher number means slower
  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
  this.direction=direction //horizontal or vertical
  this.style=style //width and height and other css
  document.write('<div id="'+divId+'" class="'+divClass+'" style="position: relative; overflow: hidden; '+this.style+'"><div class="innerDiv" style="position: absolute; display: inline;" id="'+divId+'1">'+content[0]+'</div><div class="innerDiv" style="position: absolute; display: inline; 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")
  if (this.direction == 'v') {
    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) }
  else if (this.direction == 'h') {
    this.visibledivleft=parseInt(pausescroller.getCSSpaddingLeft(this.tickerdiv))
    this.visiblediv.style.width=this.hiddendiv.style.width=this.tickerdiv.offsetWidth-(this.visibledivleft*2)+"px"
    this.getinlineleft(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})
  if (this.direction == 'v')
    setTimeout(function(){scrollerinstance.animateup()}, this.delay)
  else if (this.direction == 'h')
    setTimeout(function(){scrollerinstance.animateleft()}, this.delay)
}


// -------------------------------------------------------------------
// animateup()- Move the two inner divs of the scroller up and in sync
// -------------------------------------------------------------------

pausescroller.prototype.animateup=function(){
  var scrollerinstance=this
  if (this.mouseoverBol==1) //if mouse is currently over scoller, do nothing (pause it)
    setTimeout(function(){scrollerinstance.animateup()}, 100)
  else{
    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()}, this.speed)
    }
    else{
      this.getinline(this.hiddendiv, this.visiblediv)
      this.swapdivs()
      setTimeout(function(){scrollerinstance.setmessage()}, this.delay)
    }
  }
}

// -------------------------------------------------------------------
// animateleft()- Move the two inner divs of the scroller left and in sync
// -------------------------------------------------------------------

pausescroller.prototype.animateleft=function(){
  var scrollerinstance=this
  if (this.mouseoverBol==1) //if mouse is currently over scoller, do nothing (pause it)
    setTimeout(function(){scrollerinstance.animateleft()}, 100)
  else{
    if (parseInt(this.hiddendiv.style.left)>(this.visibledivleft+5)){
      this.visiblediv.style.left=parseInt(this.visiblediv.style.left)-5+"px"
      this.hiddendiv.style.left=parseInt(this.hiddendiv.style.left)-5+"px"
      setTimeout(function(){scrollerinstance.animateleft()}, this.speed)
    }
    else{
      this.getinlineleft(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"
}

pausescroller.prototype.getinlineleft=function(div1, div2){
  div1.style.left=this.visibledivleft+"px"
  div2.style.left=Math.max(div1.parentNode.offsetWidth, div1.offsetWidth)+"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]
    if(this.direction == 'v')
      this.animateup()
    else if (this.direction == 'h')
      this.animateleft()
  }
}

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
}

pausescroller.getCSSpaddingLeft=function(tickerobj){ //get CSS padding value, if any
  if (tickerobj.currentStyle)
    return tickerobj.currentStyle["paddingLeft"]
  else if (window.getComputedStyle) //if DOM2
    return window.getComputedStyle(tickerobj, "").getPropertyValue("padding-left")
  else
   return 0
}