function geld(number, force,dontshowdezimalpunkt)
{
	if (dontshowdezimalpunkt)
			dezimalpunkt = "";
	else	dezimalpunkt = ".";
	if (!force)
		force=0;
	if (number == null) number = 0;
	return number_format (number, 2, ",",dezimalpunkt, force);
}

function number_format (number, decimals, dec_point, thousands_sep, force)
{
	//return number;
	//alert('nummer wird jetzt formatiert');
  var exponent = "";
  var numberstr = number.toString ();
  var eindex = numberstr.indexOf ("e");
  if (!force)
  		force=0;
  if (eindex > -1)
  {
    exponent = numberstr.substring (eindex);
    number = parseFloat (numberstr.substring (0, eindex));
  }
  
  if (decimals != null)
  {
    var temp = Math.pow (10, decimals);
    number = Math.round (number * temp) / temp;
  }
  var sign = number < 0 ? "-" : "";
  var integer = (number > 0 ? 
      Math.floor (number) : Math.abs (Math.ceil (number))).toString ();
  
  var fractional = number.toString ().substring (integer.length + sign.length);
  if (fractional || force)
  {
	  dec_point = dec_point != null ? dec_point : ".";
	  fractional = decimals != null && decimals > 0 || fractional.length > 1 ? 
	               (dec_point + fractional.substring (1)) : "";
	  if (decimals != null && decimals > 0)
	  {
	    for (i = fractional.length - 1, z = decimals; i < z; ++i)
	      fractional += "0";
	  }
  }
  thousands_sep = (thousands_sep != dec_point || fractional.length == 0) ? 
                  thousands_sep : null;
  if (thousands_sep != null && thousands_sep != "")
  {
	for (i = integer.length - 3; i > 0; i -= 3)
      integer = integer.substring (0 , i) + thousands_sep + integer.substring (i);
  }
  
  return sign + integer + fractional + exponent;
}


Array.prototype.in_array = function(needle) {
	for(var i=0; i < this.length; i++) if(this[i] === needle) return true;
	return false;
}

Array.prototype.contains = function(obj) {
     var i, listed = false;
     for (i=0; i<this.length; i++) {
       if (this[i] == obj) {
         listed = true;
         break;
       }
     }
     return listed;
   };

/****************************************************************************************************
/ Zum Messen, wie lange die Ausfuehrung eines Skripts dauert, einfach am Anfang anfang(); eingeben und am Ende ende('Funktionsname');*/

function anfang() {
	var datum = new Date();
	time1 = datum.getMilliseconds();
}

function ende(f) {
	var datum2 = new Date();
	var time2 = datum2.getMilliseconds();
	var dauer = time2-time1;
	alert('Die Funktion '+f+'() hat soeben '+dauer+' ms zum Durchlaufen gebraucht.');
}