// Copyright © 2001 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.

// email

function checkEmail (strng, strng2, strng3, strng4, strng5, strng6, n1, n2, n3, n4, n5, n6) {
var error="";
var submit=true;
var one_error=true;
var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
var emailFilter=/^.+@.+\..{2,3}$/;


if (strng == "") {
   error = "You didn't enter an email address.\n";
   one_error=false;
   submit=false;
alert(error);
}

    
    if (!(emailFilter.test(strng)) && one_error) { 
       error = "Please enter a valid email address.\n";
	one_error=false;
	submit=false;
	alert(error);
    }
  
//test email for illegal characters
       
         if (strng.match(illegalChars) && one_error) {
          error = "The email address contains illegal characters.\n";
	one_error=false;
	submit=false;
	alert(error);
       }

    
    
//check phone number
if (strng2 == "" && one_error) {
   error = "You didn't enter a phone number.\n";
   alert(error);
   one_error=false;
   submit=false;
}

var stripped = strng2.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
    if (isNaN(parseInt(stripped)) && one_error) {
       error = "The phone number contains illegal characters.";
       alert(error);
       one_error=false;
       submit=false;
  
    }
    if ((stripped.length != 11 ) && one_error) {
	error = "The phone number is expected to be 11 digits. Please make sure you included an area code.\n";
	alert(error);
	one_error=false;
	submit=false;
    } 


//check for name

	if (illegalChars.test(strng3) && one_error) {
    	error = "The Name field contains illegal characters.\n";
    	alert(error);
    	one_error=false;
    	submit=false;
    }
    if (strng3 == "" && one_error) {
 	  error = "You didn't enter a first name.\n";
 	  alert(error);
 	  one_error=false;
 	  submit=false;
	}

//check for surname

	if (illegalChars.test(strng4)  && one_error) {
    	error = "The Surname field contains illegal characters.\n";
    	alert(error);
    	one_error=false;
    	submit=false;
    }
    if (strng4 == "" && one_error) {
 	  error = "You didn't enter a surname.\n";
 	  alert(error);
 	  one_error=false;
 	  submit=false;
	}    

//check for childs name

	if (illegalChars.test(strng5) && one_error) {
    	error = "The Childs Name field contains illegal characters.\n";
    	alert(error);
    	one_error=false;
    	submit=false;
    }
    if (strng5 == "" && one_error) {
 	  error = "You didn't enter your childs name.\n";
 	  alert(error);
 	  one_error=false;
 	  submit=false;
	}

//check for childs age
var fail=false;
	if (illegalChars.test(strng6) && one_error && fail) {
    	error = "The childs age field contains illegal characters.\n";
    	alert(error);
    	one_error=false;
    	submit=false;
    }
    if (strng6 == "" && one_error && fail) {
 	  error = "You didn't enter your childs age.\n";
 	  alert(error);
 	  one_error=false;
 	  submit=false;
	}

//check for date
    if (strng6 == "" && one_error) {
 	  error = "You didn't enter the date you wish to visit.\n";
 	  alert(error);
 	  one_error=false;
 	  submit=false;
	}

//check for nursery selection
if(n1.checked==false && n2.checked==false && n3.checked==false && n4.checked==false && n5.checked==false && n6.checked==false && one_error){
	error= "You did not select a nursery to visit.\n";
	alert (error);
	one_error=false;
 	submit=false;
	}

return (submit);    
}


// phone number - strip out delimiters and check for 10 digits

function checkPhone (strng) {
var error = "";
var submit=false;
alert("checkin phone");
if (strng == "") {
   error = "You didn't enter a phone number.\n";
   alert(error);
}

var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
    if (isNaN(parseInt(stripped))) {
       error = "The phone number contains illegal characters.";
       alert(error);
  
    }
    if ((stripped.length != 11 )) {
	error = "The phone number is expected to be 11 digits. Please make sure you included an area code.\n";
	alert(error);
    } 
    else{
    	submit=true;
    	
    	}
    	
    	
    	
    	
return (submit);
}


// password - between 6-8 chars, uppercase, lowercase, and numeral

function checkPassword (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a password.\n";
}

    var illegalChars = /[\W_]/; // allow only letters and numbers
    
    if ((strng.length < 6) || (strng.length > 8)) {
       error = "The password is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
      error = "The password contains illegal characters.\n";
    } 
    else if (!((strng.search(/(a-z)+/)) && (strng.search(/(A-Z)+/)) && (strng.search(/(0-9)+/)))) {
       error = "The password must contain at least one uppercase letter, one lowercase letter, and one numeral.\n";
    }  
return error;    
}    


// username - 4-10 chars, uc, lc, and underscore only.

function checkUsername (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a username.\n";
}


    var illegalChars = /\W/; // allow letters, numbers, and underscores
    if ((strng.length < 4) || (strng.length > 10)) {
       error = "The username is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
    error = "The username contains illegal characters.\n";
    } 
return error;
}       


// non-empty textbox

function isEmpty(strng) {
var error = "";
  if (strng.length == 0) {
     error = "The mandatory text area has not been filled in.\n"
  }
return error;	  
}

// was textbox altered

function isDifferent(strng) {
var error = ""; 
  if (strng != "Can\'t touch this!") {
     error = "You altered the inviolate text area.\n";
  }
return error;
}

// exactly one radio button is chosen

function checkRadio(checkvalue) {
var error = "";
var submit=false;
   if (!(checkvalue)) {
       error = "Please select a nursery.\n";
       alert(error);
    }
    else{
    	submit=true;
    	}
return (submit);
}

// valid selector from dropdown list

function checkDropdown(choice) {
var error = "";
    if (choice == 0) {
    error = "You didn't choose an option from the drop-down list.\n";
    }    
return error;
}