function $() {
	var elements = new Array();
	for (var i=0;i<arguments.length;i++) {
		var element = arguments[i];
		if (typeof element == 'string') element = document.getElementById(element);
		if (arguments.length == 1) return element;
		elements.push(element);
	}
	return elements;
}



function toggle_visibility(id) {
var e = document.getElementById(id);
if(e.style.display == 'block')
e.style.display = 'none';
else
e.style.display = 'block';
}

function toggle_visibilityOff(id) {
var e = document.getElementById(id);
if(e.style.display == 'block')
e.style.display = 'block';
else
e.style.display = 'none';
}


// adjust height of element
function adjustHeight(id) {
var e = document.getElementById(id);
e.style.height = "auto";
}






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


//drop down menus
startList = function() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("mainNavigation");
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() {
					this.className+=" over";
				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
				}
			}
		}
	}
}
addLoadEvent(startList);




var Event = {
	add: function(obj,type,fn) {
		if (obj.attachEvent) {
			obj['e'+type+fn] = fn;
			obj[type+fn] = function() { obj['e'+type+fn](window.event); }
			obj.attachEvent('on'+type,obj[type+fn]);
		} else
		obj.addEventListener(type,fn,false);
	},
	remove: function(obj,type,fn) {
		if (obj.detachEvent) {
			obj.detachEvent('on'+type,obj[type+fn]);
			obj[type+fn] = null;
		} else
		obj.removeEventListener(type,fn,false);
	}
}

function $() {
	var elements = new Array();
	for (var i=0;i<arguments.length;i++) {
		var element = arguments[i];
		if (typeof element == 'string') element = document.getElementById(element);
		if (arguments.length == 1) return element;
		elements.push(element);
	}
	return elements;
}



String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/,"");
}

function addClassName(el,className) {
	removeClassName(el,className);
	el.className = (el.className + " " + className).trim();
}

function removeClassName(el,className) {
	el.className = el.className.replace(className,"").trim();
}


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

window.onload = function() {
findimg();
}

function findimg()
{
var i,imgs;
// loop through all images of the document
imgs=document.getElementsByTagName('img');
for(i=0;i<imgs.length;i++)
{
// test if the class 'roll' exists
if(/roll/.test(imgs[i].className))
{
// add the function roll to the image onmouseover and onmouseout and send
// the image itself as an object
imgs[i].onmouseover=function(){roll(this);};
imgs[i].onmouseout=function(){roll(this);};
imgs[i].parentNode.onfocus=function(){roll(this);};
  imgs[i].parentNode.onblur=function(){roll(this);};
}
}
}


function roll(o)
{
// get the src of the image, and find out the file extension
var src = o.src;
var ftype = src.substring(src.lastIndexOf('.'), src.length);
// check if the src already has an _on and delete it, if that is the case 
if(/_on/.test(src))
{
var newsrc = src.replace('_on','');
}else{
// else, add the _on to the src 
var newsrc = src.replace(ftype, '_on'+ftype);
}
o.src=newsrc;
}



// ======== OPEN WINDOW ========
function openWin(U,N,P) {
	window.open(U,N,P);
}

// ======== SHOW/HIDE LAYERS =========
var remember = new Array();
var remember2 = new Array();
var checkIt;
var DHTML = (document.getElementById || document.all || document.layers);

function show(name,lvl,obj) {
	if (!DHTML) return;
	checkUserInput();
	if (remember[lvl] && remember[lvl] == name) return;
	if (remember[lvl]) {
		closeAll(lvl);
	}
	if (name) {
		var x = getObj(name);
		x.visibility = 'visible';
	}
	remember[lvl] = name;
	if (obj.parentNode) y = obj.parentNode;
	else if (obj.parentElement) y = obj.parentElement;
	else return;
	if (y.className) return;
	y.className = 'over';
	if (remember2[lvl]) remember2[lvl].className = '';
	remember2[lvl] = y;
}

function closeAll(lvl) {
	for (i=remember.length - 1;i>=lvl;i--) {
		if (remember[i]) {
			var x = getObj(remember[i]);
			x.visibility = 'hidden';
		}
		remember[i] = null;
		if (remember2[i]) {
			remember2[i].className = '';
			remember2[i] = null;
		}
	}
}

function checkUserInput() {
	if (checkIt) clearTimeout(checkIt);
	checkIt = setTimeout('closeAll(1)',5000);
}

function getObj(name) {
  if (document.getElementById) {
    return document.getElementById(name).style;
  } else if (document.all) {
    return document.all[name].style;
  } else if (document.layers) {
    return document.layers[name];
  } else return false;
}