////////////////////////////////////////////////////////
// validate form checks for:
// 	required fields are not blank
// 	at least one radiobox is selected
// 	email validation - @, full stop, # digits in the extension
//////////////////////////////////////////////////////////////


function validateForm()
{

////////////////////////////////////////////////////////
// check if required form fields are empty
// this method is suitable for short forms, but is not necessarily ideal for long forms
//////////////////////////////////////////////////////////////

var first = document.guestbook.first_name;
var last= document.guestbook.last_name;
var email = document.guestbook.email;

	if(first.value == "") { 
		alert("Please provide your first name."); 
		first.focus();
		return false;
	}
	if(last.value == "") { 
		alert("Please provide your last name."); 
		last.focus();
		return false;
	}	
	if(email.value == "") { 
		alert("Please provide your email address."); 
		email.focus();
		return false;
	}

//if the emailAddrs does not contain the @ symbol or a full stop
// emailAddress = email.value
	 if( (email.value.indexOf('@')== -1)
		|| (email.value.indexOf('.')== -1) ) {
		alert("The email field requires a \"@\" and a \".\"be used. \n\nPlease enter a valid email address.") ;
		email.focus();
		email.select();
		return false;		
	}

// check that at least 2 characters follow the .
	if( (email.value.charAt(email.value.length-4) != '.')
		&& (email.value.charAt(email.value.length-3) != '.') ) {  
		alert("You have entered an invalid email extension. You must have 2 or 3 digits after the '.' Please enter a valid email.");
		email.focus();
		email.select();
		return false;
	} 	

//////////////////////////////////////////////////////////////
// CONTINUE BLANK FIELD VALIDATION
//////////////////////////////////////////////////////////////

var phone = document.guestbook.phone;	
	if(phone.value == "") { 
		alert("Please provide your phone number."); 
		phone.focus();
		return false;
	}
	
//////////////////////////////////////////////////////////////	
// check that at least one checkbox is selected ...
//////////////////////////////////////////////////////////////

var who9 = document.guestbook.who9;
var who_other = document.guestbook.who_other;
  
	if( (document.guestbook.who1.checked == false) && (document.guestbook.who2.checked == false) && (document.guestbook.who3.checked == false) && 
	    (document.guestbook.who4.checked == false) && (document.guestbook.who5.checked == false) && (document.guestbook.who6.checked == false) && 
		(document.guestbook.who7.checked == false) && (document.guestbook.who8.checked == false) && (document.guestbook.who9.checked == false) ) {
		alert("Please tell us your relationship to Employment Options, Inc.");
		document.guestbook.who1.focus();
		return false;
	}
	
	if( (who9.checked == true) && (who_other.value == "" ) ) {
		alert("Please tell us your relationship to Employment Options, Inc.");
		who_other.focus();
		return false;
	}
		
//////////////////////////////////////////////////////////////
// CHECK select box values
////////////////////////////////////////////////////////////// 

var ref = document.guestbook.referral;
var other_ref= document.guestbook.referral_other;

if  (ref.value==""  ) {
			alert("Please specify how you found our Web site 1.");
			ref.focus();
			return false;
}

if ( (ref[8].selected==true) || (ref[6].selected==true)  ) {

	if(other_ref.value == "" )  {
			alert("Please specify how you found our Web site 2.");
			other_ref.focus();
			return false;
		}

}
		
//////////////////////////////////////////////////////////////
//if the form passes the above conditions
//allow submission

	return true;
} 

//////////////////////////////////////////////////////////////
// end function