function js_email(who, ad, sub)
{
	var sld = "nonzero"
	var tld = "co.uk"
	var sym = "@"
	var vr2 = "to:"
	var vr1 = "mail"
	var def = "NonZero: website enquiry"
	
	if (arguments.length < 2) {document.write('Oops! too few args in js_email. Please notify webmaster.') ; return}
	if (arguments.length < 3) {sub = def}
	document.write('<a href="'+vr1+vr2+ad+sym+sld+'.'+tld+'?Subject='+sub+'">'+who+'<'+'/a>')
}