function chk_reserv_validity(theForm){	
	tf = 'true';
	message = 'Please fill the information below\n';
	var email = theForm.email;
	var validateCode = theForm.verCode;
	var arrival = theForm.arrivalDate;
	var departure = theForm.departureDate;
	if(email.value == ""){
		message += '---> Email\n';
		tf = 'false';
	}
	else{
		if((email.value.indexOf('@') == -1)||(email.value.indexOf('.') == -1)){
			tf = 'false';
			message += '---> \"email\" field is not correct\n';
		} 
	}
	
	if(arrival.value == ""){
		message += '---> Arrival Date\n';
		tf = 'false';
	}
	
	if(departure.value == ""){
		message += '---> Departure Date\n';
		tf = 'false';
	}
	
	if(validateCode.value == ""){
		message += '---> Validate code cannot be blank\n';
		tf = 'false';	
	}
	if(tf == 'false'){		
		alert(message);
		if(email.value == ""){
			email.focus();
		}
		if(arrival.value == ""){
			arrival.focus();
		}
		if(departure.value == ""){
			departure.focus();
		}		
		return false;
	}
	if(tf == 'true'){
		return true;
	}
	
}