/***********************************************  
* 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   
}