function validateform(formname) {
	var firstname=document.getElementById('firstname').value;
	var lastname=document.getElementById('lastname').value;
	var emailaddress=document.getElementById('emailaddress').value;
	document.getElementById('firstname').className='inputbox';
	document.getElementById('lastname').className='inputbox';
	document.getElementById('emailaddress').className='inputbox';
	var submitform=true;
	if (firstname=='') {
		document.getElementById('firstname').className='inputboxtagged';
		submitform=false;
	}
	if (lastname=='') {
		document.getElementById('lastname').className='inputboxtagged';
		submitform=false;
	}
	if (emailaddress=='') {
		document.getElementById('emailaddress').className='inputboxtagged';
		submitform=false;
	}
	return submitform;
}