// Arguments: number to round, number of decimal places
function roundNumber(rnum, rlength) 
{
  var newnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
  return newnumber;
}

function removeKomma(caller)
{
	caller.value = caller.value.replace(",", "."); 
}