function ValidatePatientReferral()
{		
	var element = document.getElementById('txtPatientName');

	if(element.value == '')
	{
		alert("Please, enter a valid a patient name.");
		element.focus();
		return false;
	}
	
	element = document.getElementById('txtPhone');

	if(!ValidatePhone(element.value))
	{
		alert("Please, enter a valid phone number.");
		element.focus();
		return false;
	}
	
	var RegExPattern = /^(?=\d)(?:(?:(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})|(?:0?2(\/|-|\.)29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))|(?:(?:0?[1-9])|(?:1[0-2]))(\/|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2}))($|\ (?=\d)))?(((0?[1-9]|1[012])(:[0-5]\d){0,2}(\ [AP]M))|([01]\d|2[0-3])(:[0-5]\d){1,2})?$/;
	
	element = document.getElementById('txtDate');
	
	if(!element.value.match(RegExPattern))
	{
		alert('Please, enter a valid date.');
		element.focus();
		return false;
	}
	
	
					
	return true;
}

function ValidatePhone(incoming)
{
	var ValidChars = "0123456789.()- ";
	var IsCorrect=true;
	var Char;

	for (cont = 0; cont < incoming.length && IsCorrect == true; cont++) 
	{ 
		Char = incoming.charAt(cont); 
		if (ValidChars.indexOf(Char) == -1) 
			return false;
	}
	return true;
}