// get current year for copyright text
function getyear() {
	var d = new Date();
	var ret = d.getFullYear();
	return ret;
}

// contact email address
function contactemail() {
	var one = 'zetek.c';
	var two = 'il@gla';
	var three = 'o.uk';
	var four = 'ma';
	return four+two+one+three;
}

// contact email link
function contactemaillink() {
	window.location = 'mailto:'+contactemail();
}

// form submission validation 
function validate() {
	var validEmail = /^[\w\.\-\']+@[\w\-]+\.[\w\-]+(\.[\w\-]+)?(\.[\w\-]+)?(\.[\w\-]+)?$/;
	var frm = document.forms[0];
	if( !frm.elements['your_name'].value.match(/\w+/) ){
		alert('Please enter your name');
		frm.elements['your_name'].focus = true;
		return false;
	}
	else if( !frm.elements['email_address'].value && !frm.elements['telephone'].value ){
		alert('Please enter your email address or telephone number');
		frm.elements['email_address'].focus = true;
		return false;
	}
	else if( frm.elements['email_address'].value && !frm.elements['email_address'].value.match(validEmail)  ){
		alert('Please enter a valid email address');
		frm.elements['email_address'].focus = true;
		return false;
	}
	else if( frm.elements['telephone'].value && !frm.elements['telephone'].value.match(/\d+/) ){
		alert('Please enter a telephone number');
		frm.elements['telephone'].focus = true;
		return false;
	}
	else if( !frm.elements['enquiry'].value.match(/\w+/) ){
		alert('Please enter details of your enquiry');
		frm.elements['enquiry'].focus = true;
		return false;
	}
	return true;
}