function check(thisForm)
{
	messageStr = "Please complete:\n\n";
	valid = true;

	if (thisForm.yourname.value == "") { messageStr += "Your Name\n";	valid = false; }
	if (thisForm.youremail.value == "") 
	{ 
		messageStr += "Your Email Address\n";
		valid = false;
	}
	else
	{
		var emailAdd = thisForm.youremail.value;
		var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (!filter.test(emailAdd))
		{
			messageStr += "Your valid Email Address\n";
			valid = false;
		}
	}
	
	
    if (thisForm.friendname.value == "") { messageStr += "Your Friend's Name\n";	valid = false; }
	if (thisForm.friendemail.value == "") 
	{ 
		messageStr += "Your Friend's Email Address\n";
		valid = false;
	}
	else
	{
		var emailAdd = thisForm.friendemail.value;
		var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (!filter.test(emailAdd))
		{
			messageStr += "Your Friend's valid Email Address\n";
			valid = false;
		}
	}

	if (valid == false) { alert(messageStr); }

	return valid;
	
}