/************************************************************************************************************
(C) www.dhtmlgoodies.com, February 2006

This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	

Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission.

Thank you!

www.dhtmlgoodies.com
Alf Magne Kalleland

************************************************************************************************************/	
	
	
// Patterns
var formValidationMasks = new Array();
formValidationMasks['email'] = /\b[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b/gi;	// Email
formValidationMasks['numeric'] = /^[0-9]+$/gi;	// Numeric
formValidationMasks['zip'] = /^[0-9]{5}\-[0-9]{4}$/gi;	// Numeric
formValidationMasks['zip5'] = /^[0-9]{5}$/gi;	// Numeric
formValidationMasks['usert'] = /^[a-z0-9_.]+$/gi;	// tipo user
formValidationMasks['cf'] = /^[A-Z]{6}[0-9]{2}[A-Z]{1}[0-9]{2}[A-Z]{1}[0-9]{3}[A-Z]{1}$/gi;	// Codice Fiscale

function vdate(field){
var checkstr = "0123456789";
var DateField = field;
var Datevalue = "";
var DateTemp = "";
var seperator = "/";
var day;
var month;
var year;
var leap = 0;
var err = 0;
var i;
   err = 0;
//   DateValue = DateField.value;
   DateValue = DateField;
	/* Delete all chars except 0..9 */
   for (i = 0; i < DateValue.length; i++) {
	  if (checkstr.indexOf(DateValue.substr(i,1)) >= 0) {
	     DateTemp = DateTemp + DateValue.substr(i,1);
	  }
   }
   DateValue = DateTemp;
   /* Always change date to 8 digits - string*/
   /* if year is entered as 2-digit / always assume 20xx */
   if (DateValue.length == 6) {
      DateValue = DateValue.substr(0,4) + '20' + DateValue.substr(4,2); }
   if (DateValue.length != 8) {
      err = 19;}
   /* year is wrong if year = 0000 */
   year = DateValue.substr(4,4);
   if (year == 0) {
      err = 20;
   }
   /* Validation of month*/
   month = DateValue.substr(2,2);
   if ((month < 1) || (month > 12)) {
      err = 21;
   }
   /* Validation of day*/
   day = DateValue.substr(0,2);
   if (day < 1) {
     err = 22;
   }

   /* Validation leap-year / february / day */
   if ((year % 4 == 0) || (year % 100 == 0) || (year % 400 == 0)) {
      leap = 1;
   }
   if ((month == 2) && (leap == 1) && (day > 29)) {
      err = 23;
   }
   if ((month == 2) && (leap != 1) && (day > 28)) {
      err = 24;
   }
   /* Validation of other months */
   if ((day > 31) && ((month == "01") || (month == "03") || (month == "05") || (month == "07") || (month == "08") || (month == "10") || (month == "12"))) {
      err = 25;
   }
   if ((day > 30) && ((month == "04") || (month == "06") || (month == "09") || (month == "11"))) {
      err = 26;
   }
   /* if 00 ist entered, no error, deleting the entry */
   if ((day == 0) && (month == 0) && (year == 00)) {
      err = 0; day = ""; month = ""; year = ""; seperator = "";
   }
   /* if no error, write the completed date to Input-Field (e.g. 13.12.2001) */
   if (err == 0) {
//      DateField.value = day + seperator + month + seperator + year;
		return true;
   }
   /* Error-message if err != 0 */
   else {
//      alert("Date is incorrect!");
//      DateField.select();
//	  DateField.focus();
	return false;
   }
}

function validateDate(fld) {
    var RegExPattern = /^(?=\d)(?:(?:(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})|(?:0?2(\/|-|\.)29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))|(?:(?:0?[1-9])|(?:1[0-2]))(\/|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2}))($|\ (?=\d)))?(((0?[1-9]|1[012])(:[0-5]\d){0,2}(\ [AP]M))|([01]\d|2[0-3])(:[0-5]\d){1,2})?$/;
    var errorMessage = 'Please enter valid date as month, day, and four digit year.\nYou may use a slash, hyphen or period to separate the values.\nThe date must be a real date. 2-30-2000 would not be accepted.\nFormay mm/dd/yyyy.';
    if ((fld.match(RegExPattern))) {
        return true; 
    } else {
        return false;
    } 
}

var formElementArray = new Array();

/* These two event functions are from http://ejohn.org/apps/jselect/event.html */

function addEvent( obj, type, fn ) { 
  if ( obj.attachEvent ) { 
    obj['e'+type+fn] = fn; 
    obj[type+fn] = function(){obj['e'+type+fn]( window.event );} 
    obj.attachEvent( 'on'+type, obj[type+fn] ); 
  } else 
    obj.addEventListener( type, fn, false ); 
} 
function removeEvent( obj, type, fn ) { 
  if ( obj.detachEvent ) { 
    obj.detachEvent( 'on'+type, obj[type+fn] ); 
    obj[type+fn] = null; 
  } else 
    obj.removeEventListener( type, fn, false ); 
} 

function validateInput(e,inputObj)
{

	if(!inputObj)inputObj = this;		
	var inputValidates = true;
	
	if(formElementArray[inputObj.name]['required'] && inputObj.tagName=='INPUT' && inputObj.value.length==0)inputValidates = false;
	if(formElementArray[inputObj.name]['required'] && inputObj.tagName=='SELECT' && inputObj.selectedIndex==0){
		inputValidates = false;
	}

	if(formElementArray[inputObj.name]['mask'] && !inputObj.value.match(formValidationMasks[formElementArray[inputObj.name]['mask']]))inputValidates = false;
	if(formElementArray[inputObj.name]['mask']=='tdate' && !validateDate(inputObj.value))inputValidates = false;

	if(formElementArray[inputObj.name]['lmin']>inputObj.value.length && inputObj.tagName=='INPUT')inputValidates = false; // lunghezza minima

	if(formElementArray[inputObj.name]['freemask']){
		var tmpMask = formElementArray[inputObj.name]['freemask'];
		tmpMask = tmpMask.replace(/-/g,'\\-');
		tmpMask = tmpMask.replace(/S/g,'[A-Z]');
		tmpMask = tmpMask.replace(/N/g,'[0-9]');
		tmpMask = eval("/^" + tmpMask + "$/gi");
		if(!inputObj.value.match(tmpMask))inputValidates = false
	}	
	
	if(formElementArray[inputObj.name]['regexpPattern']){
		var tmpMask = eval(formElementArray[inputObj.name]['regexpPattern']);
		if(!inputObj.value.match(tmpMask))inputValidates = false
	}
	if(!formElementArray[inputObj.name]['required'] && inputObj.value.length==0 && inputObj.tagName=='INPUT')inputValidates = true;
	
	
	if (inputObj.getAttribute('id')!='submit'){
	if(inputValidates && (inputObj.tagName=='INPUT' || inputObj.tagName=='SELECT')){
		inputObj.className='validInput';
//		inputObj.parentNode.className='validInput';
	}else{
//		inputObj.parentNode.className='invalidInput'
		inputObj.className="invalidInput";
	}
	}

}

function isFormValid()
{
//	var divs = document.getElementsByTagName('DIV');
	var divs = document.getElementsByTagName('INPUT');
	for(var no=0;no<divs.length;no++){
		if(divs[no].className=='invalidInput')return false;
	}
	return true;	
}

function initFormValidation()
{
	var inputFields = document.getElementsByTagName('INPUT');
	var selectBoxes = document.getElementsByTagName('SELECT');
	
	var inputs = new Array();
	
	for(var no=0;no<inputFields.length;no++){
		if(inputFields[no].getAttribute('required')=='1')
		inputs[inputs.length] = inputFields[no];
	}	

	for(var no=0;no<selectBoxes.length;no++){
		if(selectBoxes[no].getAttribute('required')=='1')
		inputs[inputs.length] = selectBoxes[no];
	}
	
	for(var no=0;no<inputs.length;no++){
		var className = inputs[no].parentNode.className;
		if(className && className.indexOf('validInput')>=0)continue;			

		var required = inputs[no].getAttribute('required');
		if(!required) required = inputs[no].required;		

		var lmin = inputs[no].getAttribute('lmin');
		if(!lmin) lmin = inputs[no].lmin;		
		
		var mask = inputs[no].getAttribute('mask');
		if(!mask)mask = inputs[no].mask;
		
		var freemask = inputs[no].getAttribute('freemask');
		if(!freemask)freemask = inputs[no].freemask;
		
		var regexpPattern = inputs[no].getAttribute('regexpPattern');
		if(!regexpPattern)regexpPattern = inputs[no].regexpPattern;
		
//		var div = document.createElement('DIV');
//		div.className = 'invalidInput';
//		inputs[no].parentNode.insertBefore(div,inputs[no]);
//		div.appendChild(inputs[no]);
//		div.style.width = inputs[no].offsetWidth + 'px';

		if (inputs[no].getAttribute('id')!='submit'){
			inputs[no].onfocus = function ()
			{
			  this.className = 'focusinput';
			}
		}

		addEvent(inputs[no],'blur',validateInput);
		addEvent(inputs[no],'change',validateInput);
		addEvent(inputs[no],'paste',validateInput);
//		addEvent(inputs[no],'keyup',validateInput);
		
		formElementArray[inputs[no].name] = new Array();
		formElementArray[inputs[no].name]['mask'] = mask;
		formElementArray[inputs[no].name]['freemask'] = freemask;
		formElementArray[inputs[no].name]['required'] = required;
		formElementArray[inputs[no].name]['regexpPattern'] = regexpPattern;
		formElementArray[inputs[no].name]['lmin'] = lmin;

		validateInput(false,inputs[no]);
	}	
}

//window.onload = initFormValidation();