function checkNotNull(field){
  return (field.value.length > 0 );
}

function isEmail(str) {
  // are regular expressions supported?
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported)
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,4}|[0-9]{1,4})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}

function checkMaxAmount(pMaxAmount, myfield) {
  if (myfield.value.length > pMaxAmount)	  {
   alert("Bitte geben Sie maximal " + pMaxAmount + " Zeichen ein.");
   myfield.focus();
  }
}

function checkGermanLocalNumber(pNumber) {
   return !isNaN(getGermanLocalFullNumber(pNumber));
}

function getGermanLocalFullNumber(pNumber) {
   var numToCheck;
   var stringVal = pNumber;
   var kommPos = stringVal.indexOf(",");
   if (kommPos != -1) {
    var checkPartOne = stringVal.substring(0, kommPos);
    var checkPartTwo = stringVal.substring(kommPos + 1, stringVal.length);
    numToCheck = checkPartOne + checkPartTwo;
   } else {
    numToCheck = stringVal;
   }
   return numToCheck;
}

function toGermanFloat(pNumber) {
   var numToCheck;
   var stringVal = pNumber;
   var kommPos = stringVal.indexOf(",");
   if (kommPos != -1) {
    var checkPartOne = stringVal.substring(0, kommPos);
    var checkPartTwo = stringVal.substring(kommPos + 1, stringVal.length);
    numToCheck = checkPartOne + "." + checkPartTwo;
   } else {
    numToCheck = stringVal;
   }
   return parseFloat(numToCheck);
}

function convertDecimalPoint(pNumber) {
   var numToCheck;
   var stringVal = pNumber;
   var kommPos = stringVal.indexOf(",");
   if (kommPos != -1) {
    var checkPartOne = stringVal.substring(0, kommPos);
    var checkPartTwo = stringVal.substring(kommPos + 1, stringVal.length);
    numToCheck = checkPartOne + "." + checkPartTwo;
   } else {
    numToCheck = stringVal;
   }
   return numToCheck;
}

function getGermanDecimalPlaces(pNumber) {
   var decimalPlaces;
   var numToCheck;
   var stringVal = pNumber;
   var kommPos = stringVal.indexOf(",");
   if (kommPos != -1) {
      decimalPlaces = stringVal.substring(kommPos + 1, stringVal.length).length;
   } else {
      decimalPlaces = 0;
   }
   return decimalPlaces;
}


function getGermanAbsValue(pNumber) {
   var absValue;
   var stringVal = pNumber;
   var kommPos = stringVal.indexOf(",");
   if (kommPos != -1) {
      absValue = stringVal.substring(0, kommPos);
   } else {
      absValue = pNumber;
   }

   return absValue;
}

function checkTheCheckBox(f_cb, f_hidden) {
 if (f_cb.checked) {
  f_hidden.value = true;
 } else {
  f_hidden.value = false;
 }
}

function chk_password_strength(password) {
	var re = new RegExp("^(?=.{6,})((?=.*[A-Za-z])((?=.*[0-9])|(?=.*[^A-Za-z0-9]))).*$", "g");
	if (password.match(re)) return true
	else return false;
}

function disp_password_strength_hint() {
	alert("Bitte passen Sie Ihr Passwort an! Aus rechtlichen sowie sicherheitstechnischen Gründen muss dieses zukünftig aus einer Kombination von Buchstaben und Zahlen/Sonderzeichen bestehen. Speichern Sie im Anschluss die Registrierung über den Button \"Speichern\" ab.");
}

function trim(inputString) {
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
   if (typeof inputString != "string") { return inputString; }
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
   while (retValue.indexOf("  ") != -1) { // Note that there are two spaces in the string - look for multiple spaces within the string
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); // Again, there are two spaces in each of the strings
   }
   return retValue; // Return the trimmed string back to the user
} // Ends the "trim" function