// JavaScript Document

 

/* Pausing up-down scroller -  Dynamic Drive */

function pausescroller(content, divId, divClass, delay){

this.content=content 

this.tickerid=divId 

this.delay=delay

this.mouseoverBol=0

this.hiddendivpointer=1 

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>')

var scrollerinstance=this

if (window.addEventListener) 

window.addEventListener("load", function(){scrollerinstance.initialize()}, false)

else if (window.attachEvent) 

window.attachEvent("onload", function(){scrollerinstance.initialize()})

else if (document.getElementById) 

setTimeout(function(){scrollerinstance.initialize()}, 500)

}

 

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)

}

 

 

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)

}

}

 

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.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

}