function preloadImages() {
	if (document.images) {
		var aryImages = new Array();
		var strText = '_on.jpg'
		var j = 1;
		for (var i = 1; i <= 10; i++, j++) {
			aryImages[i] = new Image();
			aryImages[i].src = 'images/nav' + j + strText;
			if (j == 5) {
				j = 0;
				strText = '_text.gif';
			}
		}
	}
}

function swapImage(el, strDir)
{
	el.src = 'images/' + el.name + strDir + '.jpg';
	if (strDir == '_on')
		document.navtext.src = 'images/' + el.name + '_text.gif';
	else
		document.navtext.src = 'images/nav' + docID + '_text.gif';
}

function openWin(url, handle, settings)
{
	var win = window.open(url, handle, settings);
}
  
// Email.js version 5
var tld_ = new Array()
tld_[0] = "com";
tld_[1] = "org";
tld_[2] = "net";
tld_[3] = "ws";
tld_[4] = "info";
tld_[10] = "co.uk";
tld_[11] = "org.uk";
tld_[12] = "gov.uk";
tld_[13] = "ac.uk";
var topDom_ = 13;
var m_ = "mailto:";
var a_ = "@";
var d_ = ".";

function mail(name, dom, tl, params)
{
	var s = e(name,dom,tl);
	document.write('<a href="'+m_+s+params+'">'+s+'</a>');
}
function mail2(name, dom, tl, params, display)
{
	document.write('<a href="'+m_+e(name,dom,tl)+params+'">'+display+'</a>');
}
function e(name, dom, tl)
{
	var s = name+a_;
	if (tl!=-2)
	{
		s+= dom;
		if (tl>=0)
			s+= d_+tld_[tl];
	}
	else
		s+= swapper(dom);
	return s;
}
function swapper(d)
{
	var s = "";
	for (var i=0; i<d.length; i+=2)
		if (i+1==d.length)
			s+= d.charAt(i)
		else
			s+= d.charAt(i+1)+d.charAt(i);
	return s.replace(/\?/g,'.');
}