function validateContactUs(){

	var f = document.fcontactus;
	var alertString = "";
	
	if(f.Name.value == ""){
		alertString = alertString + "Please enter your name.\n";
	}
	if(f.Telephone.value == ""){
		alertString = alertString + "Please enter your telephone number.\n";
	}	
	
	if(f.Emailaddress.value != ""){
		var field = f.Emailaddress; // email field
  		var str = field.value; // email string
  		var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid
  		var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; // valid
  		if (!reg1.test(str) && reg2.test(str)){ 
		// syntax is valid
  		}
		else{
  			alertString = alertString + "A valid email address must be filled in\n"; // this is also optional
		}
	}
	else{
		alertString = alertString + "Please enter your email address\n";
	}
	
	if(f.Comments.value == ""){
		alertString = alertString + "Please enter any comments or enquiries.\n";
	}
	
	
	if(alertString == ""){
		f.action = "inc/contactscript.asp";
		f.submit();
	}
	else{
		alert(alertString);
	}
	
}