// Dropdown menu, no submit button
// [http://www.irt.org/script/621.htm]

function goto_URL(object) {
    window.location.href = object.options[object.selectedIndex].value;
	}
	
// Clear text input on click
// Courtesy of Kenneth Love [http://www.eyeheartzombies.com/]

function clearText(thefield) {
	if (thefield.defaultValue==thefield.value)
    thefield.value = ""
    }

function restoreText(thefield) {
	if(thefield.value == "")
    thefield.value = thefield.defaultValue
    }
	
	
// Explorer Destroyer
var hasIE_phone_home = 1;


// This function does the actual browser detection
function hasIE_hasIE() {
  var ua = navigator.userAgent.toLowerCase();
  return ((ua.indexOf('msie') != -1) && (ua.indexOf('opera') == -1) && 
          (ua.indexOf('webtv') == -1) &&
          (location.href.indexOf('seenIEPage') == -1));
}

function hasIE_showOnlyLayer(whichLayer)
{
  if (document.getElementById)
    {
      var style2 = document.getElementById(whichLayer);
    }
  else if (document.all)
    {
      var style2 = document.all[whichLayer];
    }
  else if (document.layers)
    {
      var style2 = document.layers[whichLayer];
    }
  var body = document.getElementsByTagName('body');
  body[0].innerHTML = style2.innerHTML;
}

function hasIE_showLayer(whichLayer)
{
  if (document.getElementById)
    {
      var style2 = document.getElementById(whichLayer).style;
      style2.display = "block";
    }
  else if (document.all)
    {
      var style2 = document.all[whichLayer].style;
      style2.display = "block";
    }
  else if (document.layers)
    {
      var style2 = document.layers[whichLayer].style;
      style2.display = "block";
    }
}

function hasIE_moveAd(adid) {
  if (document.getElementById)
    {
      var ad = document.getElementById('hasIE_ad');
      var adloc = document.getElementById(adid);
    }
  else if (document.all)
    {
      var ad = document.all['hasIE_ad'];
      var adloc = document.all[adid];
    }
  else if (document.layers)
    {
      var ad = document.layers['hasIE_ad'];
      var adloc = document.layers[adid];
    }
  adloc.innerHTML = ad.innerHTML;
}

// Hides and shows sections of the page based on whether or not it's
// running in IE
function hasIE_hideAndShow() {
  if (hasIE_hasIE()) {
    hasIE_showOnlyLayer("hasIE_level2");
          if (hasIE_phone_home == 1)
            hasIE_phoneHome('getIE_pingimage2');
  } else {
    if (hasIE_phone_home == 1)
      hasIE_phoneHome('getIE_pingimage0');
  }
}

function hasIE_phoneHome(image) {
  if (document.getElementById)
    {
      var img = document.getElementById(image);
    }
  else if (document.all)
    {
      var img = document.all[image];
    }
  else if (document.layers)
    {
      var img = document.layers[image];
    }
  img.setAttribute('src','http://getunder50.com/ping.php?host='+location.host);

}

function hasIE_ContinueWithoutFF() {
    if (location.href.indexOf('?') != -1)
        location.href += '&seenIEPage=1';
    else
        location.href += '?seenIEPage=1';
}


	
/* Smooth scrolling
   Changes links that link to other parts of this page to scroll
   smoothly to those links rather than jump to them directly, which
   can be a little disorienting.
   
   sil, http://www.kryogenix.org/
   
   v1.0 2003-11-11
   v1.1 2005-06-16 wrap it up in an object
*/

var ss = {
  fixAllLinks: function() {
    // Get a list of all links in the page
    var allLinks = document.getElementsByTagName('a');
    // Walk through the list
    for (var i=0;i<allLinks.length;i++) {
      var lnk = allLinks[i];
      if ((lnk.href && lnk.href.indexOf('#') != -1) && 
          ( (lnk.pathname == location.pathname) ||
            ('/'+lnk.pathname == location.pathname) ) && 
          (lnk.search == location.search)) {
        // If the link is internal to the page (begins in #)
        // then attach the smoothScroll function as an onclick
        // event handler
        ss.addEvent(lnk,'click',ss.smoothScroll);
      }
    }
  },

  smoothScroll: function(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 lnk = allLinks[i];
      if (lnk.name && (lnk.name == anchor)) {
        destinationLink = lnk;
        break;
      }
    }
  
    // If we didn't find a destination, give up and let the browser do
    // its thing
    if (!destinationLink) return true;
  
    // 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;
    }
  
    // Stop any current scrolling
    clearInterval(ss.INTERVAL);
  
    cypos = ss.getCurrentYPos();
  
    ss_stepsize = parseInt((desty-cypos)/ss.STEPS);
    ss.INTERVAL =
setInterval('ss.scrollWindow('+ss_stepsize+','+desty+',"'+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();
    }
  },

  scrollWindow: function(scramount,dest,anchor) {
    wascypos = ss.getCurrentYPos();
    isAbove = (wascypos < dest);
    window.scrollTo(0,wascypos + scramount);
    iscypos = ss.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;
    }
  },

  getCurrentYPos: function() {
    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;
  },

  addEvent: function(elm, evType, fn, useCapture) {
    // addEvent and removeEvent
    // cross-browser event handling for IE5+,  NS6 and Mozilla
    // By Scott Andrew
    if (elm.addEventListener){
      elm.addEventListener(evType, fn, useCapture);
      return true;
    } else if (elm.attachEvent){
      var r = elm.attachEvent("on"+evType, fn);
      return r;
    } else {
      alert("Handler could not be removed");
    }
  } 
}

ss.STEPS = 25;

ss.addEvent(window,"load",ss.fixAllLinks);


var Position = {
  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return [valueL, valueT];
  }
}

var ScrollLinks = {
    currentHash: false,
    start: function(){
        this.scroll = new fx.Scroll({duration: 800, onComplete: function(){ScrollLinks.end();}});
        this.allinks = document.getElementsByTagName("a");
        for (i=0; i<this.allinks.length; i++){
            var lnk = this.allinks[i];
            if ((lnk.href && lnk.href.indexOf("#") != -1) && ( (lnk.pathname == location.pathname) || ("/"+lnk.pathname == location.pathname) ) && (lnk.search == location.search)) {
                lnk.onclick = function(){
                    ScrollLinks.scroll.clearTimer();
                    this.initialHref = this.href;
                    this.initialHash = this.hash;
                    this.href = "javascript:void(0)";
                    setTimeout(function(){this.href = this.initialHref;}.bind(this), 200);
                    ScrollLinks.click(this);
                }
            }
        }
    },

    click: function(link){
        this.currentHash = link.initialHash.substr(1);
        if (this.currentHash) {
            for (j=0; j < this.allinks.length; j++){
                if (this.allinks[j].id == this.currentHash){
                    if (!window.opera) this.scroll.scrollTo(this.allinks[j]);
                    else this.scroll.scrollTo(this.allinks[j].parentNode);
                    break;
                }
            }
        }
    },

    end: function(){
        // TODO: make the following line not append multiple #refs
        //window.location = window.location + "#"+this.currentHash;
        this.currentHash = false;
    }
}

window.onload = function(){
    ScrollLinks.start();
}