// ----------------------------------------------------------------------
// Javascript form validation routines.
// Author: Stephen Poley
// Author : Benton Valenzuela
//
// Simple routines to quickly pick up obvious typos.
// All validation routines return true if executed by an older browser:
// in this case validation must be left to the server.
//
// Update Jun 2005: discovered that reason IE wasn't setting focus was
// due to an IE timing bug. Added 0.1 sec delay to fix.
//
// Update Oct 2005: minor tidy-up: unused parameter removed
//
// Update Jun 2006: minor improvements to variable names and layout
//   Update July 2008 modified with additions by Benton Valenzuela
//  Modifications include adding functions for name, ID and Status selection.
// ----------------------------------------------------------------------



         
// Only script specific to this form goes here.
// General-purpose routines are in a separate file.
  function validateOnSubmit() {
    var elem;
    var errors = 0;
    // execute all element validations in reverse order, so focus gets
    // set to the first one in error.
//	if(!validatePhone(document.forms.contactForm.phone,'val_phone', true)) errors +=1;  //phone
//	if(!validateID(document.forms.contactForm.id,'val_id',true)) errors +=1; 		//ID
//	if(!validateName(document.forms.contactForm.name,'val_name',true)) errors +=1;    //name
 	if(!validateEmail(document.newAccount.signUp.email,'val_email',true)) errors += 1; //for email
    return (errors==0);
  
	};
  
var nbsp = 160;		// non-breaking space char
var node_text = 3;	// DOM text node-type
var emptyString = /^\s*$/ ;
var global_valfield;	// retain valfield for timer thread

// --------------------------------------------
//                  trim
// Trim leading/trailing whitespace off string
// --------------------------------------------

function trim(str)
{
  return str.replace(/^\s+|\s+$/g, '');
}


// --------------------------------------------
//                  setfocus
// Delayed focus setting to get around IE bug
// --------------------------------------------

function setFocusDelayed()
{
  global_valfield.focus();
}

function setfocus(valfield)
{
  // save valfield in global variable so value retained when routine exits
  global_valfield = valfield;
  setTimeout( 'setFocusDelayed()', 100 );
}


// --------------------------------------------
//                  msg
// Display warn/error message in HTML element.
// commonCheck routine must have previously been called
// --------------------------------------------

function msg(fld,     // id of element to display message in
             msgtype, // class to give element ("warn" or "error")
             message) // string to display
{
  // setting an empty string can give problems if later set to a 
  // non-empty string, so ensure a space present. (For Mozilla and Opera one could 
  // simply use a space, but IE demands something more, like a non-breaking space.)
  var dispmessage;
  if (emptyString.test(message)) 
    dispmessage = String.fromCharCode(nbsp);    
  else  
    dispmessage = message;

  var elem = document.getElementById(fld);
  elem.firstChild.nodeValue = dispmessage;  
  
  elem.className = msgtype;   // set the CSS class to adjust appearance of message
}

// --------------------------------------------
//            commonCheck
// Common code for all validation routines to:
// (a) check for older / less-equipped browsers
// (b) check if empty fields are required
// Returns true (validation passed), 
//         false (validation failed) or 
//         proceed (don't know yet)
// --------------------------------------------

var proceed = 3;  

function commonCheck    (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
 
  if (!document.getElementById) 
    return true;  // not available on this browser - leave validation to the server
  var elem = document.getElementById(infofield);
  
 // if (!elem.firstChild) return true;  // not available on this browser 
  //if (elem.firstChild.nodeType != node_text) return true;  // infofield is wrong type of node  

  if (emptyString.test(valfield.value)) {
    if (required) {
      msg (infofield, "error", "ERROR: required");  
      setfocus(valfield);
      return false;
    }
    else {
      msg (infofield, "warn", "");   // OK
      return true;  
    }
  }
  return proceed;
}

/*

// --------------------------------------------
//            validateID
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------

function validateID(valfield, //element to ve validated
					infofield)  // id of element to recieve info/error msg
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
	
} */
// --------------------------------------------
//            validateName
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------
/*
function validateName(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{
  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;

  msg (infofield, "warn", "");  
  return true;
}

// --------------------------------------------
//            validateTitle
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------

function validateTitle(valfield, //element to be validated 
					   infofield)  // id of element to recieve info/error msg
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

// --------------------------------------------
//            validateID
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------

function validateID(valfield, //element to ve validated
					infofield)  // id of element to recieve info/error msg
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
	
}

// --------------------------------------------
//            validateAuthor
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------

function validateAuthor(valfield, //element to be validated
						infofield) //id of element to be validated
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}
*/

// --------------------------------------------
//            validateStatus
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------

function validateStatus(valfield, 		//element to be validated
						 infofield)		//id of element to be validated
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;

}
/* Validate Size. For the moment this will just check for a blank field*/

function validateSize(valfield, infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	msg(infofield, "warn", "");
	
	return true;	
}

// --------------------------------------------
//            validateStatus
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------
/*
function validatePublisher(valfield,	//element to be validated
						   	infofield)	//id of element to be validated
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
	
} */
/*
function validateEmail(valfield, 	//element to be validated
					   	infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateEdition(valfield,
						 infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat; 
	
	msg(infofield, "warn", "");
	return true;
	
}
/*
function validatePhone(valfield,
						 infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat; 
	
	msg(infofield, "warn", "");
	return true;
	
}

function validateItem(valfield,
						 infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat; 
	
	msg(infofield, "warn", "");
	return true;
	
}

function validateCheck(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateISBN(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateRush(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateReference(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateVol(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateIssue(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validatePages(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateISSN(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}

function validateDate(valfield,
					   infofield)
{
	var stat = commonCheck(valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}


/*
function validatePresent2(valfield,
						   infofield)
{
	var stat = commonCheck (valfield, infofield, true);
	if(stat != proceed) return stat;
	
	msg (infofield, "warn", "");
	return true;
}


*/

// --------------------------------------------
//               validatePassword
// Validate if password
// Returns true if so (and also if could not be executed because of old browser)
// --------------------------------------------
function validatePassword (valfield,	//element to be validated
						   infofield,
						   required)
{
	var stat = commonCheck(valfield,infofield,required);
	if(stat != proceed) return stat;
	
	msg(infofield, "warn", "");
	return true;
}
						    






// --------------------------------------------
//               validateEmail
// Validate if e-mail address
// Returns true if so (and also if could not be executed because of old browser)
// --------------------------------------------

function validateEmail  (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  // value of field with whitespace trimmed off
  var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/  ;
  if (!email.test(tfld)) {
    msg (infofield, "error", "ERROR: not a valid e-mail address");
    setfocus(valfield);
    return false;
  }

  var email2 = /^[A-Za-z][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z][A-Za-z]$/  ;
  if (!email2.test(tfld)) 
    msg (infofield, "warn", "Unusual e-mail address - check if correct");
  
  else
    msg (infofield, "warn", "");
  return true;
} 

//------------------------------------------------
//					validateId
//Validate if school ID number
// Returns true
//------------------------------------------------

function validateID    (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
   
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);
  var idNum = /^[0-9]+$/ ;
  
  if (!idNum.test(tfld)) {
    msg (infofield, "error", "Not a Valid ID");
    setfocus(valfield);
    return false;
  }

  
   var numdigits = 0;
  for (var j=0; j<tfld.length; j++)
    if (tfld.charAt(j)>='0' && tfld.charAt(j)<='9') numdigits++; 
	

 

  if(numdigits == 9)
  {
  msg (infofield, "warn", "");
  return true;
  }
  
   else if (numdigits<9) {
    msg (infofield, "error", "ERROR: " + numdigits + " digits - too short. Id must be 9 digits");
    setfocus(valfield);
    return false;
  }
} 

// --------------------------------------------
//            validateName
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------

function validateName(valfield,   // element to be validated
                         infofield,
						 required) // id of element to receive info/error msg  ?? may remove
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  msg (infofield, "warn", "");  
  return true;
}

/*
//------------------------------------------------
//					validateId
//Validate if school ID number
// Returns true
//------------------------------------------------

function validateId    (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
   
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);
  var idNum = /^[0-9]+$/ ;
  if (!idNum.test(tfld)) {
    msg (infofield, "error", "Not a Valid ID");
    setfocus(valfield);
    return false;
  }

  
   var numdigits = 0;
  for (var j=0; j<tfld.length; j++)
    if (tfld.charAt(j)>='0' && tfld.charAt(j)<='9') numdigits++; 
	

 

  if(numdigits == 9)
  {
  msg (infofield, "warn", "");
  return true;
  }
  
   else if (numdigits<9) {
    msg (infofield, "error", "ERROR: " + numdigits + " digits - too short. Id must be 9 digits");
    setfocus(valfield);
    return false;
  }
} 

// --------------------------------------------
//            validateTelnr
// Validate telephone number
// Returns true if so (and also if could not be executed because of old browser)
// Permits spaces, hyphens, brackets and leading +
// --------------------------------------------


function validateTelnr  (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  // value of field with whitespace trimmed off
  var telnr = /^\+?[0-9 () -]+[0-9]$/  ;
  if (!telnr.test(tfld)) {
    msg (infofield, "error", "ERROR: not a valid telephone number. Characters permitted are digits, space ()- and leading +");
    setfocus(valfield);
    return false;
  }

  var numdigits = 0;
  for (var j=0; j<tfld.length; j++)
    if (tfld.charAt(j)>='0' && tfld.charAt(j)<='9') numdigits++;

  if (numdigits<6) {
    msg (infofield, "error", "ERROR: " + numdigits + " digits - too short");
    setfocus(valfield);
    return false;
  }

  if (numdigits>14)
  {
    msg (infofield, "warn", numdigits + " digits - check if correct"); //make sure to return false
	return false;
  }
  else { 
    if (numdigits<10)
      msg (infofield, "warn", "Only " + numdigits + " digits - check if correct");
    
	else
      msg (infofield, "warn", "");
  }
  return true;
} */