/*js for ALL new fields validation, best of valid8/mvregA */
/* change log:
 18082004	new
 25082004	full support for mult select/radio/checkbox
 21102004	added type=hidden
*/
/* functions list:
 getType(htmlelem){
 Field(name,mand,regexp,descr,prereq,prereg,min,max,msgerr,tab) {
 isMand() {
 isValid() {
 getValue() {
 validateFields(tab) {//template only
 genMessage(field) {
 setFocus(fieldname) {
 dateFormat(string) {
 toString( date ) {
 isValidDate( val ) {
 setBGColor(field) {
 resetBGColor(field) {
 blurfield() {
*/
/*
var doBGColor == true: do errmsg input field bg color change
var doOKCheck == true: do onblur ok/nok gif switching
*/
/*arry of Fields is "Fields"*/
var Fields = new Array();
var valueSep = '~';/*multi-value separator*/
var errmsg = '';
var num4 = /\d{4}/;
var num5 = /\d{5}/;
var num6 = /\d{6}/;
var num11 = /\d{11}/;
var alfaname = /^[a-zäöüß \.\-\']{2,}$/i;
var alfanameaccent = /^[a-zäöüß\u00E1-\u0236 \.\-\']{2,}$/i;
var alfaort = /^[a-zäöüß0-9 \.\-\/]{2,}$/i;
var email = /^[a-z0-9\.\-\+_]+@[a-z0-9\.\-\+_]+\.[a-z0-9\.\-\+_]+$/i;
var telefon = /^[0-9 \+\-\/\,]{5,}$/;
var nonblank = /\S{3,}/;
var egal = /.*/;
var ancd = /[MW]\d{6}/;
var scsn = /\d{16}|(\d{12}\*)/;
var regexptime = /^(\d|[ 01]\d|2[0123]):[0-5][0-9]$/;
function getType(htmlelem){/*helper function*/
 var type = 'dummy';
 with (htmlelem) {
  switch (type) {
   case 'text' :
   case 'textarea' :
   case 'hidden' :	/*21102004*/
   case 'file' :	return type;
   case 'select-one' :
   case 'select-multiple' :	return 'select';
   case 'radio' : /*1-option radio/checkbox*/
   case 'checkbox' : return '1'+type;
   case 'dummy' : /*n-options radio/checkbox*/
    if (length>0) return htmlelem[0].type;
    else return '';
   default :  return '';
  }/*switch*/
 }/*with*/
}
function Field(name,mand,regexp,descr,prereq,prereg,min,max,msgerr,tab) {/*constructor*/
this.name = name;/*HTML field name*/
this.mand = mand;/*true/false*/
this.regexp = regexp;/*RegExp,/pz/,/date/*/
this.descr = descr;/*String, short description(field label)*/
this.prereq = prereq;/*String, name of prereq Field*/
this.prereg = prereg;/*RegExp for prereq, isMand only if satisfied*/
this.min = min;
this.max = max;
this.msgerr = msgerr;/*String, long error msg*/
this.tab = tab;/*String, name of tab if tabbed form, fi '03'*/
var htmlelement = self.document.forms[0].elements[name];
this.type = getType(htmlelement);
this.elem = new Array();
switch (this.type) {/*put array -> array, non-array -> [0]*/
 case 'text' :
 case 'textarea' :
 case 'hidden' :	/*21102004*/
 case 'select' :
 case 'file' :
  this.elem[0] = htmlelement;
  break;
 case '1radio' :
 case '1checkbox' :
  this.elem[0] = htmlelement;
  this.type = this.type.substr(1);/*remove 1*/
  break;
 case 'radio' :
 case 'checkbox' :
  this.elem = htmlelement;
  break;
 default :
  this.elem[0] = null;
  break;
}/*switch*/
this.isMand = isMand;
this.isValid = isValid;
this.getValue = getValue;
}
function isMand() {/*if prereq&&prereg exist, test*/
 with (this){
  var pre = (prereq&&prereg) ? prereg.test(Fields[prereq].getValue()) : true;
  return mand && pre;
 }/*with*/
}
function isValid() {/*doesn't check prereq/prereg!*/
 with (this){
  var value = getValue();
  if (regexp.source=='pz') {
   if (name=='PZ') return (value==calcPrufZeichen());
   else return (value==calcPrufZeichen(null,'1'));
  }
  if (regexp.source=='date') {
   if (dateFormat.isValid(value)) {
     if (min || max) {
      var match = dateFormat.regexp.exec(value);
      var dvalue = new Date(match[dateFormat.yearix],match[dateFormat.monthix]-1,match[dateFormat.dayix]);
      if ((min ? 0<=dvalue-min : true) && (max ? 0>=dvalue-max : true)) return true;
      }/*if min||max*/
     else return true;
   }/*if isValid*/
  }/*date*/
  else if (regexp.test(value)) {
   if (min || max) {
    if ((min ? min<=value : true) && (max ? max>=value : true)) return true}
   else return true;
  }/*if test*/
  return false;/*all possib's*/
 }/*with*/
}
function getValue() {
 with (this) {
  switch (type) {
   case 'text' :
   case 'textarea' :
   case 'hidden' :	/*21102004*/
   case 'file' :
    return elem[0].value;
   case 'select' :
    var val = '';
    for (var i=0;i<elem[0].options.length;i++){
     if (elem[0].options[i].selected)
      val += ((val.length>0) ? valueSep : '') + elem[0].options[i].value;
    }/*for*/
    return val;
   case 'radio' :
   case 'checkbox' :
    val = '';
    for (var i=0;i<elem.length;i++){
     if (elem[i].checked)
      val += ((val.length>0) ? valueSep : '') + elem[i].value;
    }/*for*/
    return val;
   default :
    return '';
  }/*switch*/
 }/*with*/
}
//function validateFields(tab) {/*only a template*/
///* may be used by calling=application JS library */
// errmsg = '';
// for (var i in Fields) {
//  if (tab && tab!=Fields[i].tab) continue;/*field not on current tab*/
//  if (Fields[i].isMand()) {
//   if (! Fields[i].isValid()) {
//    if (errmsg.length==0) var focus = Fields[i];/*remember 1st field in error*/
//    genMessage(Fields[i]);
//   }/*if !Fields*/
//  }/*if Fields[i]*/
// }/*for*/
// if (errmsg.length>0) {/*at least 1 error*/
//  setHtml( 'msgtext2', errmsg, true);
//  if (focus.tab!=null) setTab(focus.tab);/*show tab of rememb'd field*/
//  focus.elem[0].focus();/*set focus to field*/
//  return false;
// }/*if*/
// return true;
//}
function genMessage(field) {/*Field*/
 with (field) {
  var msg = '<strong>'+descr +'</strong>:&nbsp;';
  if (msgerr) msg += msgerr; else msg += 'Einen gültigen Wert eingeben!';
  var mintf = min==null ? false : true;
  if (mintf || max) {
   if (mintf) var mint = dateFormat.toString(min); /*works also for string*/
   if (max) var maxt = dateFormat.toString(max);
   if (mintf && max) msg+=' (Minimum '+mint+', Maximum '+maxt+')';
   else if (mintf) msg+=' (Minimum '+mint+')';
   else if (max) msg+=' (Maximum '+maxt+')';
  }/*if*/
 if (doBGColor) {
  setBGColor(elem[0]);
  elem[0].onchange = resetBGColor;
 }
  errmsg += msg + '<br>';
 }/*with*/
}
function setFocus(fieldname) {
/* can be called by form onLoad event or tab switching */
/* form.elements[0].focus(); don't work for hidden!*/
 if (self.document.forms.length==0) return;
 var elem = self.document.forms[0].elements;
 if (fieldname) {elem[fieldname].focus();return;}
 for (var i=0; i<elem.length; i++ ) {
  with (elem[i]) {
   if (type=='text'||type=='button'||type=='textarea') {focus();return}
  }/*with*/
 }/*for*/
}
function dateFormat(string) {
/* constructor; supports all formats containing TT MM JJJJ and 2 equal separators */
 this.pat = string;
 var sep = string.replace(/(TT)|(MM)|(JJJJ)/,'').charAt(0);
 this.regexp = new RegExp( '^' +
  string.replace(/[^TMJ]/g, '\\'+sep).replace(/(TT)|(MM)/g, '(\\d{1,2})').replace(/JJJJ/, '(\\d{4})') + '$' );
 var seq = string.replace(/[^TMJ]/g,'').replace(/TT/, 'T').replace(/MM/, 'M').replace(/JJJJ/, 'J');
 this.dayix = seq.indexOf('T')+1;
 this.monthix = seq.indexOf('M')+1;
 this.yearix = seq.indexOf('J')+1;
 this.isValid = isValidDate;
 this.toString = toString;
}
function toString( date ) {
/* method of dateFormat. Called by function genMessage. date: local Date/String */
 with (this) {
  if (typeof(date)=="string") return date;
  if (typeof(date)=="number") return date.toString();
  return pat.replace(/JJJJ/,date.getFullYear()).replace(/MM/,(date.getMonth()+1)).replace(/TT/,date.getDate());
 }/*this*/
}
function isValidDate( val ) {
/* method of dateFormat. Called by Field.isValid if Field.regexp = /date/. val: String */
 with (this) {
  var match = regexp.exec(val);
  if (match==null) return false;
  day = match[dayix];
  month = match[monthix];
  year = match[yearix];
/*alert( year+' - '+month+' - '+day);*/
  if ((month < 1 || month > 12) || (day < 1 || day > 31)) return false;	
  if ((month==4 || month==6 || month==9 || month==11) && day==31) return false;
  if (month == 2) {
   var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); 
   if (day>29 || (day==29 && !isleap)) return false;
  }
  return true;
 }/*this*/
}
function setBGColor(field) {/*set bg color for invalid input field*/
 if (!field) field = this;
 if (field.style) field.style.backgroundColor = '#ffcccc';/*dull pink*/
}
function resetBGColor(field) {/*reset bg color for invalid input field*/
 if (!field) field = this;
 if (field.style) field.style.backgroundColor = '#ffffff';
}
function blurfield() {
/* can be used as HTML field onBlur event; reset background color and image */
/* must be set like: elem['fld'].onblur = blurfield;*/
/* e ? e.target : event.srcElement; NS:IE*/
 if (doBGColor) resetBGColor(this);
 var img = self.document.images[this.name];
/*alert(Fields[this.name].getValue()+' : '+Fields[this.name].isValid());*/
 if (Fields[this.name].isValid()) {
  if (img) img.src = okgif.src;
 }
 else {
  if (img) img.src = nokgif.src;
 }
}