function validateform()
{
	var expdigit = /[^\d|\,|\.]+/;
	var expCommon = /[^\w|\s|\-|\.|\,]+/;
	var Name = document.contactform.formname.value;
	var Address = document.contactform.formaddress.value;
	var Dayphone = document.contactform.formdayphone.value;
	var Eveningphone = document.contactform.formeveningphone.value;
	var Email = document.contactform.formemail.value;

		
	if (Name.length==0)
	{
		alert("Please enter your name.")
		document.contactform.formname.select();
		return false;
	}	
	
	if (Address.length==0)
	{
		alert("Please your address.")
		document.contactform.formaddress.select();
		return false;
	}	
	
	if (Email.length==0)
	{
		alert("Please enter your email address.")
		document.contactform.formemail.select();
		return false;
	}	

	if(!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(Email)))
	{
		alert('Please enter a valid email address.')
		document.contactform.formemail.select();
		return false;	
	}		
	

	if (Dayphone.length==0)
	{
		alert("Please supply your daytime telephone number.")
		document.contactform.formdayphone.select();
		return false;
	}

	if (Eveningphone.length==0)
	{
		alert("Please supply your evening telephone number.")
		document.contactform.formeveningphone.select();
		return false;
	}	
}