/* Internal Scrolling Effect */

function findLinks() {
 // Get a list of all links in the page
 var allLinks = document.getElementsByTagName('a');

 for (var i=0;i<allLinks.length;i++) {
   var links = allLinks[i];// If the link is internal to the page (begins in #), is a pathname, whose location is internal
   if ((links.href && links.href.indexOf('#') != -1) && ( (links.pathname == location.pathname) || ('/'+links.pathname == location.pathname) ) &&  
       (links.search == location.search)) 
   {
     // then attach the smoothScroll function as an onclick event handler
     ss_addEvent(links,'click',smoothScroll);
   }
 }
}

function smoothScroll(e) 
{
  // This is an event handler; get the clicked on element,
  // in a cross-browser fashion
  if (window.event) 
  {
    target = window.event.srcElement;
  } 
  else if (e) 
  {
    target = e.target;
  } 
  else return;
 
  // Make sure that the target is an element, not a text node
  // within an element
  if (target.nodeType == 3) 
  {
    target = target.parentNode;
  }
 
  // Paranoia; check this is an A tag
  if (target.nodeName.toLowerCase() != 'a') return;
 
  // Find the <a name> tag corresponding to this href
  // First strip off the hash (first character)
  anchor = target.hash.substr(1);
  // Now loop all A tags until we find one with that name
  var allLinks = document.getElementsByTagName('a');
  var destinationLink = null;
  for (var i=0;i<allLinks.length;i++) 
  {
    var links = allLinks[i];
    if (links.name && (links.name == anchor)) 
	{
      destinationLink = links;
      break;
    }
  }
 
  // If we didn't find a destination, dont do anything
  if (!destinationLink) return true;
 
  zae_flasher(destinationLink.name,6);
  
  // Find the destination's position
  var destx = destinationLink.offsetLeft;  
  var desty = destinationLink.offsetTop;
  var thisNode = destinationLink;
  while (thisNode.offsetParent && (thisNode.offsetParent != document.body)) 
  {
    thisNode = thisNode.offsetParent;
    destx += thisNode.offsetLeft;
    desty += thisNode.offsetTop;
  }
 //alert(desty);
  // Stop any current scrolling
  clearInterval(ss_INTERVAL);
 
  cypos = getCurrentYPos();
 
  ss_stepsize = parseInt((desty-cypos)/ss_STEPS);
  ss_INTERVAL = setInterval('scrollWindow('+ss_stepsize+','+(parseInt(desty)-100)+',"'+anchor+'")',10);
 
  // And stop the actual click happening
  if (window.event) 
  {
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (e && e.preventDefault && e.stopPropagation) 
  {
    e.preventDefault();
    e.stopPropagation();
  }
}

function zae_flasher(object,numFlashes)
{
	original_color = "#888";
	if(numFlashes%2==0)
	{
		//document.getElementsByName(object)[0].parentNode.style.borderStyle="solid";
		//document.getElementsByName(object)[0].parentNode.style.borderWidth="0px";
		document.getElementsByName(object)[0].parentNode.style.color="#CCD5DC";
	}
	else
	{
		//document.getElementsByName(object)[0].parentNode.style.borderStyle="solid";
		//document.getElementsByName(object)[0].parentNode.style.borderWidth="3px";
		document.getElementsByName(object)[0].parentNode.style.color="#F28739";
	}
	
	if(numFlashes>0)
		zae_flashTimeout=setTimeout("zae_flasher('"+object+"',"+(numFlashes-1)+")",500);
	else
	{
		document.getElementsByName(object)[0].parentNode.style.color="#000";
		clearTimeout(zae_flashTimeout);
	}
}

function scrollWindow(scramount,dest,anchor) 
{
  wascypos = getCurrentYPos();
  isAbove = (wascypos < dest);
  window.scrollTo(0, wascypos + scramount);
  iscypos = getCurrentYPos();
  isAboveNow = (iscypos < dest);
  if ((isAbove != isAboveNow) || (wascypos == iscypos)) {
    // if we've just scrolled past the destination, or
    // we haven't moved from the last scroll (i.e., we're at the
    // bottom of the page) then scroll exactly to the link
    window.scrollTo(0,dest);
    // cancel the repeating timer
    clearInterval(ss_INTERVAL);
    // and jump to the link directly so the URL's right
    //location.hash = anchor;
  }
}

function getCurrentYPos() 
{
  if (document.body && document.body.scrollTop)
    return document.body.scrollTop;
  if (document.documentElement && document.documentElement.scrollTop)
    return document.documentElement.scrollTop;
  if (window.pageYOffset)
    return window.pageYOffset;
  return 0;
}

function ss_addEvent(elm, evType, fn, useCapture)
{
  if (elm.addEventListener)
  {
    elm.addEventListener(evType, fn, useCapture);
    return true;
  } 
  else if (elm.attachEvent)
  {
    var r = elm.attachEvent("on"+evType, fn);
    return r;
  }
}  

var ss_INTERVAL;
var ss_STEPS = 25;

ss_addEvent(window,"load",findLinks);