function validate_komma(field) {
  var valid = ".0123456789"
  var ok = "yes";
  var temp;
  var tempsign;
  var allsigns = "";

  for (var i=0; i<field.value.length; i++) {
    if(field.value.substring(i, i+1) == ","){
      tempsign = ".";
      allsigns = ""+allsigns+tempsign;
    }
    else{
      tempsign = field.value.substring(i, i+1);
      allsigns = ""+allsigns+tempsign;
    }
    temp = "" + tempsign;
    if (valid.indexOf(temp) == "-1") ok = "no";
  }

  if (ok == "no") {
    alert("Ungültiger Eintrag! Nur .0123456789 erlaubt!");
    field.focus();
    field.select();
  }
  else {
    field.value = allsigns;
  }

}

function validate_zahlen(the_val) {
  var valid = ",0123456789"
  var ok = "yes";
  var temp;
  var tempsign;
  var allsigns = "";

  for (var i=0; i<the_val.length; i++) {
    if(the_val.substring(i, i+1) == ","){
      tempsign = ".";
      allsigns = ""+allsigns+tempsign;
    }
    else{
      tempsign = the_val.substring(i, i+1);
      allsigns = ""+allsigns+tempsign;
    }
    temp = "" + tempsign;
    if (valid.indexOf(temp) == "-1") ok = "no";
  }

  if (ok == "no") {
    return false;
  }
  else {
    the_val = allsigns;
    return true;
  }

}


function validate(field) {
var valid = ".0123456789"
var ok = "yes";
var temp;
for (var i=0; i<field.value.length; i++) {
temp = "" + field.value.substring(i, i+1);
if (valid.indexOf(temp) == "-1") ok = "no";
}
if (ok == "no") {
alert("Ungültiger Eintrag! Nur .0123456789 erlaubt!");
field.focus();
field.select();
   }
}

function ckeckInt(field) {
var valid = "0123456789"
var ok = "yes";
var temp;
for (var i=0; i<field.value.length; i++) {
temp = "" + field.value.substring(i, i+1);
if (valid.indexOf(temp) == "-1") ok = "no";
}
if (ok == "no") {
alert("Ungültiger Eintrag! Nur 0123456789 erlaubt!");
field.focus();
field.select();
   }
}

function check_time(field){
var checkstr = "0123456789";
var TimeField = field;
var TimeValue = "";
var TimeTemp = "";
var seperator = ":";
var minute;
var hour;
var year;
var leap = 0;
var err = 0;
var i;
   err = 0;
   TimeValue = TimeField.value;
   /* Delete all chars except 0..9 */
   for (i = 0; i < TimeValue.length; i++) {
      if (checkstr.indexOf(TimeValue.substr(i,1)) >= 0) {
         TimeTemp = TimeTemp + TimeValue.substr(i,1);
      }
   }
   TimeValue = TimeTemp;
   /* Always change date to 8 digits - string*/
   /* if year is entered as 2-digit / always assume 20xx */
   if (TimeValue.length == 1) {
      TimeValue = '0' + TimeValue.substr(0,2) + '00'; }
   if (TimeValue.length == 2) {
      TimeValue = TimeValue.substr(0,2) + '00'; }
   if (TimeValue.length != 4) {
      err = 19;}
   /* year is wrong if year = 0000
   year = TimeValue.substr(4,4);
   if (year == 0) {
      err = 20;
   }
   */
   /* Validation of hour*/
   hour = TimeValue.substr(0,2);
   if ((hour < 0) || (hour > 24)) {
   err = 21;
   }
   /* Validation of minute*/
   minute = TimeValue.substr(2,2);
   if ((minute < 0) || (minute > 60)) {
   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 ((hour == 0) && (minute == 0)) {
      err = 0; hour = "00"; minute = "00"; seperator = ":";
   }
   /* if no error, write the completed date to Input-Field (e.g. 13.12.2001) */
   if (err == 0) {
      TimeField.value = hour + seperator + minute;
   }
   /* Error-message if err != 0 */
   else {
      alert("Time is incorrect!");
      TimeField.select();
      TimeField.focus();
      field.focus();
      field.select();
   }
}

function check_time_sec(field){
var checkstr = "0123456789";
var TimeField = field;
var TimeValue = "";
var TimeTemp = "";
var seperator = ":";
var second;
var minute;
var hour;
var year;
var leap = 0;
var err = 0;
var i;
   err = 0;
   TimeValue = TimeField.value;
   /* Delete all chars except 0..9 */
   for (i = 0; i < TimeValue.length; i++) {
      if (checkstr.indexOf(TimeValue.substr(i,1)) >= 0) {
         TimeTemp = TimeTemp + TimeValue.substr(i,1);
      }
   }
   TimeValue = TimeTemp;
   /* Always change date to 8 digits - string*/
   /* if year is entered as 2-digit / always assume 20xx */
   if (TimeValue.length == 1) {
      TimeValue = '0' + TimeValue.substr(0,2) + '00'; }
   if (TimeValue.length == 2) {
      TimeValue = TimeValue.substr(0,2) + '00'; }
   if (TimeValue.length != 6) {
      err = 19;}
   /* year is wrong if year = 0000
   year = TimeValue.substr(4,4);
   if (year == 0) {
      err = 20;
   }
   */
   /* Validation of hour*/
   hour = TimeValue.substr(0,2);
   if ((hour < 0) || (hour > 24)) {
   err = 21;
   }
   /* Validation of minute*/
   minute = TimeValue.substr(2,2);
   if ((minute < 0) || (minute > 59)) {
   err = 22;
   }
   /* Validation of second*/
   second = TimeValue.substr(4,2);
   if ((second < 0) || (second > 59)) {
   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 ((hour == 0) && (minute == 0)) {
      err = 0; hour = "00"; minute = "00"; seperator = ":";
   }
   /* if no error, write the completed date to Input-Field (e.g. 13.12.2001) */
   if (err == 0) {
      TimeField.value = hour + seperator + minute + seperator + second;
   }
   /* Error-message if err != 0 */
   else {
      alert("Time is incorrect!");
      TimeField.select();
      TimeField.focus();
      field.focus();
      field.select();
   }
}


function check_date(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;
   /* 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 err;
   }
   /* Error-message if err != 0 */
   else {
      alert("Date is incorrect!");
      DateField.select();
      DateField.focus();
      field.focus();
      field.select();
      return err;
   }
}