function calculateImmovideo()
{
	var price = 0;
	var summe = 0;
	var size = 0;
	
	if (document.getElementById("privat").checked == true)
	{	price = 3.2;}
	else if (document.getElementById("gewerbe").checked == true)
	{	price = 4;  }
	
	size = document.getElementById("size").value;
	summe = (size * price) + 30;

	

	document.getElementById("ergebnis2").innerHTML = number_format(summe,2,",",".") + " €";
	document.getElementById("ergebnis").value = number_format(summe,2,",",".");
	
}

function /*out: String*/ number_format( /* in: float   */ number,
                                        /* in: integer */ laenge,
                                        /* in: String  */ sep,
                                        /* in: String  */ th_sep ) {

  number = Math.round( number * Math.pow(10, laenge) ) / Math.pow(10, laenge);
  str_number = number+"";
  arr_int = str_number.split(".");
  if(!arr_int[0]) arr_int[0] = "0";
  if(!arr_int[1]) arr_int[1] = "";
  if(arr_int[1].length < laenge){
    nachkomma = arr_int[1];
    for(i=arr_int[1].length+1; i <= laenge; i++){  nachkomma += "0";  }
    arr_int[1] = nachkomma;
  }
  if(th_sep != "" && arr_int[0].length > 3){
    Begriff = arr_int[0];
    arr_int[0] = "";
    for(j = 3; j < Begriff.length ; j+=3){
      Extrakt = Begriff.slice(Begriff.length - j, Begriff.length - j + 3);
      arr_int[0] = th_sep + Extrakt +  arr_int[0] + "";
    }
    str_first = Begriff.substr(0, (Begriff.length % 3 == 0)?3:(Begriff.length % 3));
    arr_int[0] = str_first + arr_int[0];
  }
  return arr_int[0]+sep+arr_int[1];
}