function isEmail(elm) 
{
    if (elm.value.indexOf("@") == "-1" ||
        elm.value.indexOf(".") == "-1" ||
        elm.value == "")
    return true;
    else return false;
}

function checkData() 

{

if (document.bookings.name.value.length == 0) 
	{
	alert("Please enter your name.");
	document.bookings.name.focus();
	return false;
	}
	
if (isEmail(document.bookings.email) == true) 
	{
   	alert("Please enter a valid eMail address.");
	document.bookings.email.focus();
  	return false;
  	}
  	
if (document.bookings.phone.value.length == 0) 
  	{
	alert("Please enter your phone number.");
	document.bookings.phone.focus();
	return false;
	}
	
if (document.bookings.date.value.length == 0) 
	{
	alert("Please enter the event date ");
	document.bookings.date.focus();
	return false;
	}
	
if (document.bookings.time.value.length == 0) 
	{
	alert("Please enter the event time");
	document.bookings.time.focus();
	return false;
	}

if (document.bookings.location.value.length == 0) 
	{
	alert("Please enter the event location");
	document.bookings.location.focus();
	return false;
	}	
	
if (document.bookings.address.value.length == 0) 
	{
	alert("Please enter the event address");
	document.bookings.address.focus();
	return false;
	}
 	
if (document.bookings.city.value.length == 0) 
	{
	alert("Please enter your city or town.");
	document.bookings.city.focus();
	return false;
	}
	
if (document.bookings.state.value.length == 0) 
	{
	alert("Please enter your state or province.");
	document.bookings.state.focus();
	return false;
	}
	
if (document.bookings.zipcode.value.length == 0) 
	{
	alert("Please enter your zip or postal code.");
	document.bookings.zipcode.focus();
	return false;
	}
	
return true;
}