// ----------------------------------------------------------------------
// Javascript form validation routines.
// Author: Stephen Poley
//
// 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
// ----------------------------------------------------------------------

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 = 2;  

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 Value Missing");  
      setfocus(valfield);
      return false;
    }
    else {
      msg (infofield, "warn", "");   // OK
      return true;  
    }
  }
  return proceed;
}

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

function validatePresent(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;
}

function alphanumeric(alphane)
{
	
	if (alphane.length == 0){
		return false;		
	}
	
	var numaric = alphane;
	for(var j=0; j<numaric.length; j++)
		{
		  var alphaa = numaric.charAt(j);
		  var hh = alphaa.charCodeAt(0);
		  if((hh > 47 && hh<58) || (hh > 64 && hh<91) || (hh > 96 && hh<123))
		  {
		  }
		else	{
			 return false;
		  }
		}
		
		//checks if first is number 
	var first = numaric.charAt(0);
	var ff = first.charCodeAt(0);
	//alert (ff);
	if (ff > 47 && ff<58){
		return false;
		
	}
	
 return true;
}

// --------------------------------------------
//            validateDropdown
// Makes sure a drop down has been used
// Returns true if so 
// --------------------------------------------

function validateUsername(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{
	
	

 // var stat = commonCheck (valfield, infofield, true);
// var tfld = trim(valfield.value);
 
 //if (tfld != "Select one"){
//	 return true;  
// }
 
 var un = trim(valfield.value);
 
	if (un.length > 10){
		 msg (infofield, "error", "ERROR: Username greater then 10 characters.");
		 return false;
	} else if (un.length < 3){
		
			 msg (infofield, "error", "ERROR: Username less then 3 characters.");
			 return false;
		
	}
 
  if (alphanumeric(un) == false){
	   msg (infofield, "error", "ERROR: Username must start with a letter and consist of all letters or numbers thereafter.");
	  return false;
	  
  }

 
  return true;
 
  
    

 
}
//***************************************************************************
//
//                           *UOFFL VALIDATION FUNCTIONS*
//
//***************************************************************************

function validatelName(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{


 
 var un = trim(valfield.value);
 
	if (un.length > 25){
		 msg (infofield, "error", "ERROR: League Name greater then 25 characters.");
		 return false;
	} else if (un.length < 3){
		
			 msg (infofield, "error", "ERROR: League Name less then 3 characters.");
			 return false;
		
	}
 
  return true;   

 
}

function validatetName(valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
						 errmsg)
{


 
 var un = trim(valfield.value);
 
	if (un.length > 30){
		 msg (infofield, "error", errmsg);
		 return false;
	} else if (un.length < 3){
		
			 msg (infofield, "error", errmsg);
			 return false;
		
	}
 
  return true;   

 
}


function validateScap(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{


 
 var scap = trim(valfield.value);
 if (scap.length == 0 ){
		 msg (infofield, "error", "ERROR: Salary Cap Empty.");
		 return false;
 }else if (scap < 25){
		 msg (infofield, "error", "ERROR: Salary Cap Must Be Greater then 25.");
		 return false;
	} else if (scap > 1000){
		
			 msg (infofield, "error", "ERROR: Salary Cap Must Be Less then 1000.");
			 return false;
		
	} else if (isNaN(scap)){
	    msg (infofield, "error", "ERROR: Salary Cap Must Be a Number between 25 and 1000.");
			 return false;	
	}
		
		
 
  return true;
 
  
    

 
}


function validatePasswdL(valfield,   // element to be validated
						  infofield ) // id of element to receive info/error msg
{

 // var stat = commonCheck (valfield, infofield, true);
// var tfld = trim(valfield.value);
 
 //if (tfld != "Select one"){
//	 return true;  
// }
 
 var pw1 = trim(valfield.value);
 

 
 
 if (pw1.length > 10){
		 msg (infofield, "error", "ERROR: Password greater then 10 characters.");
		 return false;
	} else if (pw1.length < 3){
		
			 msg (infofield, "error", "ERROR: Password less then 3 characters.");
			 return false;
		
	}
 
  return true;
 
  
    

 
}

function validateSName(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{
 // var stat = commonCheck (valfield, infofield, true);
// var tfld = trim(valfield.value);
 
 //if (tfld != "Select one"){
//	 return true;  
// }
 
 var un = trim(valfield.value);
 
	if (un.length > 50){
		 msg (infofield, "error", "ERROR: Slot Name greater then 50 characters.");
		 return false;
	} else if (un.length < 3){
		
			 msg (infofield, "error", "ERROR: Slot Name less then 3 characters.");
			 return false;
		
	}
 
  return true;
 
  
    

 
}

function validatePos(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{

 // var stat = commonCheck (valfield, infofield, true);
// var tfld = trim(valfield.value);
 
 //if (tfld != "Select one"){
//	 return true;  
// }
 
 var un = trim(valfield.value);
 
	if (un.length > 5){
		 msg (infofield, "error", "ERROR: Pos greater then 5 characters.");
		 return false;
	} else if (un.length == 0){
		
			 msg (infofield, "error", "ERROR: Pos Empty.");
			 return false;
		
	}
 
  return true;
 
  
    

 
}

function validateNflTeam(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{

 // var stat = commonCheck (valfield, infofield, true);
// var tfld = trim(valfield.value);
 
 //if (tfld != "Select one"){
//	 return true;  
// }
 
 var un = trim(valfield.value);
 
	if (un.length > 5){
		 msg (infofield, "error", "ERROR: Team greater then 50 characters.");
		 return false;
	} else if (un.length == 0){
		
			 msg (infofield, "error", "ERROR: NFL Team Name Empty.");
			 return false;
		
	}
 
  return true;
 
  
    

 
}


//*********************************************************************************


function validatePasswd(valfield,   // element to be validated
						valfield2,
                         infofield ) // id of element to receive info/error msg
{

 // var stat = commonCheck (valfield, infofield, true);
// var tfld = trim(valfield.value);
 
 //if (tfld != "Select one"){
//	 return true;  
// }
 
 var pw1 = trim(valfield.value);
 var pw2 = trim(valfield2.value);

 if (pw1 != pw2){
	 msg (infofield, "error", "ERROR: The two passwords do not match");
		 return false;
	 
 }
 
 if (pw1.length > 10){
		 msg (infofield, "error", "ERROR: Password greater then 10 characters.");
		 return false;
	} else if (pw1.length < 3){
		
			 msg (infofield, "error", "ERROR: Password less then 3 characters.");
			 return false;
		
	}
 /*
 if (alphanumeric(un) == false){
	   msg (infofield, "error", "ERROR: Password must start with a letter and consist of all letters or numbers thereafter.");
	  return false;
	  
  }
*/
  return true;
 
  
    

 
}



function checkEmpty(valfield,   // element to be validated
				    infofield, // id of element to receive info/error msg
					outMsg) // message to printout
{ 
 
var pw1 = trim(valfield.value);
 
if (pw1.length < 1){
		
			 msg (infofield, "error", outMsg);
			 return false;	
	}
 
  return true;   

 
}

function checkTime(valfield,   // element to be validated
				    infofield, // id of element to receive info/error msg
					outMsg) // message to printout
{ 
 
var pw1 = trim(valfield.value);
 
   var time__ = /^[0-9]{1,2}[:][0-9]{2}\s{1}AM|PM|am|pm{1}$/;
  if (!time__.test(pw1)) {

		
			 msg (infofield, "error", outMsg);
			 return false;	
	}
 
  return true;   

 
}
  
  
  function validateDropdown(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{

 // var stat = commonCheck (valfield, infofield, true);
// var tfld = trim(valfield.value);
 
 //if (tfld != "Select one"){
//	 return true;  
// }
 
	var idx =  valfield.selectedIndex;
  if (idx > 0){ return true;}
  
  
  //alert (idx + " " + valfield.id);
 if (valfield.id == "select1"){
  msg (infofield, "error", "ERROR: State/Province not Chosen");
 } else {
	 msg (infofield, "error", "ERROR: Country not Chosen");
 }
  return false;
    

 
}


  
// --------------------------------------------
//               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;
}


// --------------------------------------------
//            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");
  else { 
    if (numdigits<10)
      msg (infofield, "warn", "Only " + numdigits + " digits - check if correct");
    else
      msg (infofield, "warn", "");
  }
  return true;
}

// --------------------------------------------
//             validateAge
// Validate person's age
// Returns true if OK 
// --------------------------------------------

function validateAge    (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 ageRE = /^[0-9]{1,3}$/
  if (!ageRE.test(tfld)) {
    msg (infofield, "error", "ERROR: not a valid age");
    setfocus(valfield);
    return false;
  }

  if (tfld>=200) {
    msg (infofield, "error", "ERROR: not a valid age");
    setfocus(valfield);
    return false;
  }

  if (tfld>110) msg (infofield, "warn", "Older than 110: check correct");
  else {
    if (tfld<7) msg (infofield, "warn", "Bit young for this, aren't you?");
    else        msg (infofield, "warn", "");
  }
  return true;
}