// -------------------------------------------------------------------
// Ajax XML Ticker (txt file source)
// Author: Dynamic Drive (http://www.dynamicdrive.com)
// Update 2/19/09 - djf - combined vetical scroller and ajax routines.
// -------------------------------------------------------------------

function createAjaxObj(){
var httprequest=false
if (window.XMLHttpRequest){ // if Mozilla, Safari etc
httprequest=new XMLHttpRequest()
if (httprequest.overrideMimeType)
httprequest.overrideMimeType('text/xml')
}
else if (window.ActiveXObject){ // if IE
try {
httprequest=new ActiveXObject("Msxml2.XMLHTTP");
} 
catch (e){
try{
httprequest=new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e){}
}
}
return httprequest
}

// -------------------------------------------------------------------
// Main Ajax Ticker Object function
// ajax_ticker(xmlfile, divId, divClass, delay, optionalfadeornot)
// -------------------------------------------------------------------

function ajax_ticker(xmlfile, divId, divClass, delay, fadeornot){
this.xmlfile=xmlfile //Variable pointing to the local ticker xml file (txt)
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 ticker (and pause it if it is)
this.pointer=0
this.opacitystring=(typeof fadeornot!="undefined")? "width: 100%; filter:progid:DXImageTransform.Microsoft.alpha(opacity=100); -moz-opacity: 1" : ""
if (this.opacitystring!="") this.delay+=500 //add 1/2 sec to account for fade effect, if enabled
this.opacitysetting=0.2 //Opacity value when reset. Internal use.
this.messages=[] //Arrays to hold each message of ticker
this.ajaxobj=createAjaxObj()
//document.write('<div id="'+divId+'" class="'+divClass+'"><div style="'+this.opacitystring+'">Initializing ticker...</div></div>')
this.getXMLfile()
//new pausescroller(name_of_message_array, CSS_ID, CSS_classname, pause_in_miliseconds)
new pausescroller(this.messages, this.tickerid, '', this.delay)
}

// -------------------------------------------------------------------
// getXMLfile()- Use Ajax to fetch xml file (txt)
// -------------------------------------------------------------------

ajax_ticker.prototype.getXMLfile=function(){
if (this.ajaxobj){
var instanceOfTicker=this
var url=this.xmlfile+"?bustcache="+new Date().getTime()
this.ajaxobj.onreadystatechange=function(){instanceOfTicker.initialize()}
this.ajaxobj.open('GET', url, true)
this.ajaxobj.send(null)
}
}

// -------------------------------------------------------------------
// initialize()- Initialize ticker method.
// -Gets contents of xml file and parse it using JavaScript DOM methods 
// -------------------------------------------------------------------

ajax_ticker.prototype.initialize=function(){ 
if (this.ajaxobj.readyState == 4){ //if request of file completed
if (this.ajaxobj.status==200 || window.location.href.indexOf("http")==-1){ //if request was successful
this.contentdiv=document.getElementById(this.tickerid).firstChild //div of inner content that holds the messages
var xmldata=this.ajaxobj.responseText
this.contentdiv.style.display="none"
this.contentdiv.innerHTML=xmldata
if (this.contentdiv.getElementsByTagName("div").length==0){ //if no messages were found
this.contentdiv.innerHTML="<b>Error</b> fetching remote ticker file!"
return
}
var instanceOfTicker=this
document.getElementById(this.tickerid).onmouseover=function(){instanceOfTicker.mouseoverBol=1}
document.getElementById(this.tickerid).onmouseout=function(){instanceOfTicker.mouseoverBol=0}
if (window.attachEvent) //Clean up loose references in IE
window.attachEvent("onunload", function(){instanceOfTicker.contentdiv=instanceOfTicker.ajaxobj=null})
//Cycle through XML object and store each message inside array
for (var i=0; i<this.contentdiv.getElementsByTagName("div").length; i++){
if (this.contentdiv.getElementsByTagName("div")[i].className=="message")
this.messages[this.messages.length]=this.contentdiv.getElementsByTagName("div")[i].innerHTML
}
this.contentdiv.innerHTML=""
this.contentdiv.style.display="block"
//this.rotatemsg()
// changed to use vertical scroller
}
}
}

// -------------------------------------------------------------------
// rotatemsg()- Rotate through ticker messages and displays them
// -------------------------------------------------------------------

ajax_ticker.prototype.rotatemsg=function(){
var instanceOfTicker=this
if (this.mouseoverBol==1) //if mouse is currently over ticker, do nothing (pause it)
setTimeout(function(){instanceOfTicker.rotatemsg()}, 100)
else{ //else, construct item, show and rotate it!
this.fadetransition("reset") //FADE EFFECT- RESET OPACITY
this.contentdiv.innerHTML=this.messages[this.pointer]
this.fadetimer1=setInterval(function(){instanceOfTicker.fadetransition('up', 'fadetimer1')}, 100) //FADE EFFECT- PLAY IT
this.pointer=(this.pointer<this.messages.length-1)? this.pointer+1 : 0
setTimeout(function(){instanceOfTicker.rotatemsg()}, this.delay) //update container periodically
}
}

// -------------------------------------------------------------------
// fadetransition()- cross browser fade method for IE5.5+ and Mozilla/Firefox
// -------------------------------------------------------------------

ajax_ticker.prototype.fadetransition=function(fadetype, timerid){
var contentdiv=this.contentdiv
if (fadetype=="reset")
this.opacitysetting=0.2
if (contentdiv.filters && contentdiv.filters[0]){
if (typeof contentdiv.filters[0].opacity=="number") //IE6+
contentdiv.filters[0].opacity=this.opacitysetting*100
else //IE 5.5
contentdiv.style.filter="alpha(opacity="+this.opacitysetting*100+")"
}
else if (typeof contentdiv.style.MozOpacity!="undefined" && this.opacitystring!=""){
contentdiv.style.MozOpacity=this.opacitysetting
}
else
this.opacitysetting=1
if (fadetype=="up")
this.opacitysetting+=0.1
if (fadetype=="up" && this.opacitysetting>=1)
clearInterval(this[timerid])
}


/***********************************************
* 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=0 //index of message array for hidden div
//var dw = '<div id="'+divId+'" class="'+divClass+'" style="position: relative; overflow: hidden"><div class="innerDiv" style="position: absolute; width: 100%" id="'+divId+'1">'+this.content[0]+'</div><div class="innerDiv" style="position: absolute; width: 100%; visibility: hidden" id="'+divId+'2">'+this.content[1]+'</div></div>'
//alert(dw)
//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>')
msg = '<a href="/newsroom/pr.html"> Breaking News!! </a> <br> Visit our press room for the latest product and customer information'
document.write('<div id="'+divId+'" class="'+divClass+'" style="position: relative; overflow: hidden"><div class="innerDiv" style="position: absolute; width: 100%" id="'+divId+'1">'+msg+'</div><div class="innerDiv" style="position: absolute; width: 100%; visibility: hidden" id="'+divId+'2">'+msg+'</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=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.hiddendivpointer=(i<ceiling-1)? i+1 : 0
// this.pointer=(this.pointer<this.messages.length-1)? this.pointer+1 : 0
//this.hiddendiv.innerHTML=this.content[this.hiddendivpointer]
this.hiddendiv.innerHTML=this.content[i]
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
}