// 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) {
var error="";
if (strng == "") {
   return (false);
}

    var emailFilter=/^.+@.+\..{2,3}$/;
    if (!(emailFilter.test(strng))) { 
       return (false);
    }
    else {
//test email for illegal characters
       var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
         if (strng.match(illegalChars)) {
          return (false);
       }
    }
return (true);    
}


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

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

var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
    if (isNaN(parseInt(stripped))) {
       error = "The phone number contains illegal characters.";
  
    }
    if (!(stripped.length == 10)) {
	error = "The phone number is the wrong length. Make sure you included an area code.\n";
    } 
return error;
}


// 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;
}       

// 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 = "";
   if (!(checkvalue)) {
       error = "Please check a radio button.\n";
    }
return error;
}

function checkZip (strng) {
var error = "";
if (strng == "") {
   return (false);
} 
	var illegalChars = /[\(A-Z)(a-z)]/; // allow only numbers
    if (strng.length < 5){
    return (false);
    } 
    if (illegalChars.test(strng)){
    return (false);
    } 
return (true);
} 

function checkYear (strng) {
var error = "";
if (strng == "") {
   return (false);
} 
	var illegalChars = /[\W_(A-Z)(a-z)]/; // allow only numbers
    if (strng.length != 4) {
       return (false);
    }
    else if (illegalChars.test(strng)){
    return (false);
    }
return (true);
} 

function Form1_Validator(theForm)
{

  if (theForm.fname.value == "")
  {
    alert("Please enter a value for the \"First Name\" field.");
    theForm.fname.focus();
    return (false);
  }
  
  if (theForm.lname.value == "")
  {
    alert("Please enter a value for the \"Last Name\" field.");
    theForm.lname.focus();
    return (false);
  }
  
  if (checkEmail(theForm.email.value) == false)
  {
    alert("Please enter a valid \"Email\" address.");
    theForm.email.focus();
    return (false);
  }
  
  if(theForm.year){
	  if (checkYear(theForm.year.value) == false)
	  {
		alert("Please enter a valid \"Birthdate\" .");
		theForm.year.focus();
		return (false);
	  }
  }
  
  if (checkYear(theForm.gradyear.value) == false)
  {
    alert("Please enter a valid \"Graduation Date\" .");
    theForm.gradyear.focus();
    return (false);
  }
  
  if (theForm.bigbro.value == "")
  {
    alert("Please enter a value for the \"Big Brother\" field.");
    theForm.bigbro.focus();
    return (false);
  }

  if (theForm.chapter.value == "")
  {
    alert("Please enter a value for the \"Chapter\" field.");
    theForm.chapter.focus();
    return (false);
  }
  
  if(theForm.status) {
	  var choicestatus = theForm.status.selectedIndex;
	  if (choicestatus == 0) {
			alert("Please choose a value from the \"Status\" list.");
			theForm.status.focus();
			return (false);
	  }
  }
	
  if (theForm.address.value == "")
  {
    alert("Please enter a value for the \"Address\" field.");
    theForm.address.focus();
    return (false);
  }
  
  if (theForm.city.value == "")
  {
    alert("Please enter a value for the \"City\" field.");
    theForm.city.focus();
    return (false);
  }
  
  var choicestate = theForm.state.selectedIndex;
  if (choicestate == 0) {
		alert("Please choose a value from the \"State\" list.");
		theForm.state.focus();
		return (false);
  }
  
  if (checkZip(theForm.zip.value) == false)
  {
    alert("Please enter a value for the \"Zip\" field.");
    theForm.zip.focus();
    return (false);
  }
  
  showLayer('pleasewait');
  return (true);
}