function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      func();
      oldonload();
     }
  }
}


/* document.getElementsBySelector(selector)
   - returns an array of element objects from the current document
     matching the CSS selector. Selectors can contain element names, 
     class names and ids and can be nested. For example:
     
       elements = document.getElementsBySelect('div#main p a.external')
     
     Will return an array of all 'a' elements with 'external' in their 
     class attribute that are contained inside 'p' elements that are 
     contained inside the 'div' element which has id="main"

   New in version 0.4: Support for CSS2 and CSS3 attribute selectors:
   See http://www.w3.org/TR/css3-selectors/#attribute-selectors

   Version 0.4 - Simon Willison, March 25th 2003
   -- Works in Phoenix 0.5, Mozilla 1.3, Opera 7, Internet Explorer 6, Internet Explorer 5 on Windows
   -- Opera 7 fails 
*/

function getAllChildren(e) {
  // Returns all children of element. Workaround required for IE5/Windows. Ugh.
  return e.all ? e.all : e.getElementsByTagName('*');
}



document.getElementsBySelector = function(selector) {
  // Attempt to fail gracefully in lesser browsers
  if (!document.getElementsByTagName) {
    return new Array();
  }
  // Split selector in to tokens
  var tokens = selector.split(' ');
  var currentContext = new Array(document);
  for (var i = 0; i < tokens.length; i++) {
    token = tokens[i].replace(/^\s+/,'').replace(/\s+$/,'');;
    if (token.indexOf('#') > -1) {
      // Token is an ID selector
      var bits = token.split('#');
      var tagName = bits[0];
      var id = bits[1];
      var element = document.getElementById(id);
      if (tagName && element.nodeName.toLowerCase() != tagName) {
        // tag with that ID not found, return false
        return new Array();
      }
      // Set currentContext to contain just this element
      currentContext = new Array(element);
      continue; // Skip to next token
    }
    if (token.indexOf('.') > -1) {
      // Token contains a class selector
      var bits = token.split('.');
      var tagName = bits[0];
      var className = bits[1];
      if (!tagName) {
        tagName = '*';
      }
      // Get elements matching tag, filter them for class selector
      var found = new Array;
      var foundCount = 0;
      for (var h = 0; h < currentContext.length; h++) {
        var elements;
        if (tagName == '*') {
            elements = getAllChildren(currentContext[h]);
        } else {
            elements = currentContext[h].getElementsByTagName(tagName);
        }
        for (var j = 0; j < elements.length; j++) {
          found[foundCount++] = elements[j];
        }
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      for (var k = 0; k < found.length; k++) {
        if (found[k].className && found[k].className.match(new RegExp('\\b'+className+'\\b'))) {
          currentContext[currentContextIndex++] = found[k];
        }
      }
      continue; // Skip to next token
    }
    // Code to deal with attribute selectors
    if (token.match(/^(\w*)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/)) {
      var tagName = RegExp.$1;
      var attrName = RegExp.$2;
      var attrOperator = RegExp.$3;
      var attrValue = RegExp.$4;
      if (!tagName) {
        tagName = '*';
      }
      // Grab all of the tagName elements within current context
      var found = new Array;
      var foundCount = 0;
      for (var h = 0; h < currentContext.length; h++) {
        var elements;
        if (tagName == '*') {
            elements = getAllChildren(currentContext[h]);
        } else {
            elements = currentContext[h].getElementsByTagName(tagName);
        }
        for (var j = 0; j < elements.length; j++) {
          found[foundCount++] = elements[j];
        }
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      var checkFunction; // This function will be used to filter the elements
      switch (attrOperator) {
        case '=': // Equality
          checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
          break;
        case '~': // Match one of space seperated words 
          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('\\b'+attrValue+'\\b'))); };
          break;
        case '|': // Match start with value followed by optional hyphen
          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
          break;
        case '^': // Match starts with value
          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
          break;
        case '$': // Match ends with value - fails with "Warning" in Opera 7
          checkFunction = function(e) { return (e.getAttribute(attrName).lastIndexOf(attrValue) == e.getAttribute(attrName).length - attrValue.length); };
          break;
        case '*': // Match ends with value
          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) > -1); };
          break;
        default :
          // Just test for existence of attribute
          checkFunction = function(e) { return e.getAttribute(attrName); };
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      for (var k = 0; k < found.length; k++) {
        if (checkFunction(found[k])) {
          currentContext[currentContextIndex++] = found[k];
        }
      }
      // alert('Attribute Selector: '+tagName+' '+attrName+' '+attrOperator+' '+attrValue);
      continue; // Skip to next token
    }
    // If we get here, token is JUST an element (not a class or ID selector)
    tagName = token;
    var found = new Array;
    var foundCount = 0;
    for (var h = 0; h < currentContext.length; h++) {
      var elements = currentContext[h].getElementsByTagName(tagName);
      for (var j = 0; j < elements.length; j++) {
        found[foundCount++] = elements[j];
      }
    }
    currentContext = found;
  }
  return currentContext;
}

// drop an element into another
//--------------------------------------------
function insertAfter(newElement,targetElement) {
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement) {
    parent.appendChild(newElement);
  } else {
    parent.insertBefore(newElement,targetElement.nextSibling);
  }
}


function moveElement(elementID,final_x,final_y,interval) {
if (!document.getElementById) return false;
if (!document.getElementById(elementID)) return false;
var elem = document.getElementById(elementID);

if (elem.movement) {
	clearTimeout(elem.movement);
}
if (!elem.style.left) {
	elem.style.left = "0px";
}
if (!elem.style.top) {
	elem.style.top = "0px";
}

var xpos = parseInt(elem.style.left);
var ypos = parseInt(elem.style.top);

if (xpos == final_x && ypos == final_y) {
	return true;
}
if (xpos < final_x) {
	var dist = Math.ceil((final_x - xpos)/10);
	xpos = xpos + dist;
}
if (xpos > final_x) {
	var dist = Math.ceil((xpos - final_x)/10);
	xpos = xpos - dist;
}
if (ypos < final_y) {
	var dist = Math.ceil((final_y - ypos)/10);
	ypos = ypos + dist;
}
if (ypos > final_y) {
	var dist = Math.ceil((ypos - final_y)/10);
	ypos = ypos - dist;
}
elem.style.left = xpos + "px";
elem.style.top = ypos + "px";
var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
elem.movement = setTimeout(repeat,interval);
}



function prepareTimeline() {

// don't even try, guys
var chk=navigator.userAgent.toLowerCase();
if(chk.indexOf("msie 5")==-1 && chk.indexOf("opera")==-1)

{


if (!document.getElementsByTagName) return false;
if (!document.getElementById) return false;

var timeline = document.getElementById("timeline");


// fetch the custom width, cunningly hidden in the title of the heading.
// ...then apply it to the 

var timelinetitle = document.getElementById("t-line");

if (timeline.title == ""){
	var boxwidth = 550; // default value
	var boxheight = 200; // default value
} else {
	var boxsize = timeline.title.split('-');
	var boxwidth = boxsize[0];
	var boxheight = boxsize[1];
}

timeline.title = ""; // remove the title once it's read to prevent mouseover thiingy

var boxes = document.getElementById("timeline").getElementsByTagName("li");

for (var b=0; b < boxes.length; b++) {
	boxes[b].style.width = boxwidth + "px";
}


timeline.style.width = boxwidth + "px";

timeline.style.height = boxheight + "px";
//timeline.style.background = "#eee url(/global/gfx/timelinebg"+boxwidth+".jpg) no-repeat";


var display = document.createElement("div");
display.innerHTML = timeline.innerHTML;
timeline.innerHTML = "";
display.setAttribute("id","display");

timeline.appendChild(display);

var dates = document.getElementsBySelector("#timeline h4");
var datelist = document.createElement("div");

// set size of display div to accommodate all items
display.style.width = boxwidth * dates.length + "px"


for (var d=0; d < dates.length; d++) {

if (d==0) { // chunky way to do it... but make first link active at start
	datelist.innerHTML += "<li><a class=\"on\" title=\""+ d +"\" href=\"#\">"+ dates[d].innerHTML +"</a></li>";
	} else {
		datelist.innerHTML += "<li><a title=\""+ d +"\" href=\"#\">"+ dates[d].innerHTML +"</a></li>";
	}

}


// add in the links


var timelinedatelinks = document.createElement("ul");

//timelinedatelinks.setAttribute("align","center");

timelinedatelinks.id = "timelinedatelinks";
timelinedatelinks.className = "inline";
timelinedatelinks.appendChild(datelist);

var prevnext = document.createElement("div");

prevnext.innerHTML = "<a href=\"#\" id=\"prev\"></a><a href=\"#\" id=\"next\"></a>";



//var timelinedatelinks.innerHTML = "<ul class=\"inline\">" + datelist.innerHTML + "</ul>";


timeline.parentNode.insertBefore(timelinedatelinks,timeline);

timeline.appendChild(prevnext);

if (!display.style.left) {
	display.style.left = "0px";
}

var position = display.style.left + "px";
var prev = document.getElementById("prev");
var next = document.getElementById("next");

prev.style.height = boxheight + "px";
next.style.height = boxheight + "px";


var limit = ((boxes.length-1) * boxwidth * -1);

prev.onclick = function() {
	// need to prevent clicking while move is happening
	position = parseInt(display.style.left);

	back = position + boxwidth * 1; // multiply by 1 to ensure it's treated as a number
	var remainder = position % boxwidth;
	if (back > 0 || remainder != 0){ return false; }

	//alert(back);
	moveElement("display",back,0,13);
	return false;
}

next.onclick = function() {
	// need to prevent clicking while move is happening
	position = parseInt(display.style.left);
	var forwards = position - boxwidth;
	var remainder = position % boxwidth;
	if (forwards < limit || remainder != 0){ return false; }
	
	//alert(forwards + " " + limit);
	moveElement("display",forwards,0,13);
	return false;
}


var datelinks = document.getElementsBySelector("ul#timelinedatelinks li a");

for (var i=0; i<datelinks.length; i++) {

	datelinks[i].onclick = function() {
		var dlinks = document.getElementsBySelector("ul#timelinedatelinks li a");
	
		for (var x=0; x<dlinks.length; x++) { // reset all links

			dlinks[x].className = "";
		
		}

		this.className = "on"; // active link

		//var thedate = this.getAttribute("title");


for (var n=0; n<dlinks.length; n++) { // reset all links

		var thedate = this.getAttribute("title");
		
		var amount = -boxwidth * n;
		
			if (thedate.indexOf(n) != -1) {
				
//moveElement('the element','amount horizontal','amount vertical','speed');
				
				moveElement("display",amount,0,13);
			}
		
		}
		
		return false;

	}

}


}

}

addLoadEvent(prepareTimeline);