/***********************************************
* 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

        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) //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)
    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.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
}