var rssFeed = '';
var pausecontent = new Array();
pausecontent[0] = '';
pausecontent[1] = '';

function piper(feed)
{
  var i,tmp;
  for(i = 0; i < pausecontent.length; i++)
    pausecontent.pop();
  for(i = 0; i < feed.value.items.length; i++){
    tmp = feed.value.items[i].pubDate+'</a><br/>';
    tmp += '<a href="'+feed.value.items[i].link+'" target="_blank">';
    tmp += feed.value.items[i].title+'</a><br/>';
    if(feed.value.items[i].description)
      tmp += feed.value.items[i].description;
    pausecontent[i] = tmp;
  }
  document.getElementById("rssimg").src = "Functions/Img/feed.gif";
}

function getFeed()
{
  var url = "http://pipes.yahoo.com/pipes/9oyONQzA2xGOkM4FqGIyXQ/run?&_render=json&_callback=piper&feed=" + rssFeed;
  scripts = document.getElementsByTagName("head")[0].getElementsByTagName("script"); 
  for(var i = 0; i < scripts.length; i++){
    if(scripts[i].src == url)
      document.getElementsByTagName("head")[0].removeChild(scripts[i]);
  }
  var newScript = document.createElement('script');
  newScript.type = 'text/javascript';
  newScript.src = url;
  document.getElementsByTagName("head")[0].appendChild(newScript);
  setTimeout("getFeed()", 10000);
}

function readFeed(url)
{
  for(var i = 0; i < pausecontent.length; i++)
    pausecontent[i] = 'Caricamento dati, lettura in corso ...';
  document.getElementById("rssimg").src = "Functions/Img/reload.gif";
  rssFeed = url;
}

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
}