function berechne(zonen)
 {
  if(zonen==0)
    // nichts ausgewaehlt
	{
	reg_preis = "--,-- Euro"
	rcd_preis = "--,-- Euro"
	krg_preis = "--,-- Euro"
	krc_preis = "--,-- Euro"
	}
  if(zonen==1)
    // 1 Zone
	{
	reg_preis = "47,50 Euro"
	rcd_preis = "33,50 Euro"
	krg_preis = "40,50 Euro"
	krc_preis = "29,90 Euro"
	}
  if(zonen==2)
    // 2 Zonen
	{
	reg_preis = "57,50 Euro"
	rcd_preis = "43,00 Euro"
	krg_preis = "49,00 Euro"
	krc_preis = "38,50 Euro"
	}
  if(zonen==3)
    // 3 Zonen
	{
	reg_preis = "67,00 Euro"
	rcd_preis = "49,00 Euro"
	krg_preis = "57,00 Euro"
	krc_preis = "42,00 Euro"
	}
  if(zonen==4)
    // 4 Zonen
	{
	reg_preis = "76,00 Euro"
	rcd_preis = "55,50 Euro"
	krg_preis = "64,80 Euro"
	krc_preis = "47,00 Euro"
	}
  if(zonen==5)
    // 5 und 6 Zonen
	{
	reg_preis = "85,00 Euro"
	rcd_preis = "63,00 Euro"
	krg_preis = "72,30 Euro"
	krc_preis = "53,00 Euro"
	}
  if(zonen==6)
    // 7 Zonen
	{
	reg_preis = "95,00 Euro"
	rcd_preis = "69,50 Euro"
	krg_preis = "81,00 Euro"
	krc_preis = "59,00 Euro"
	}
  if(zonen==7)
    // 8 Zonen
	{
	reg_preis = "104,00 Euro"
	rcd_preis = "76,00 Euro"
	krg_preis = "89,00 Euro"
	krc_preis = "64,50 Euro"
	}
  if(zonen==8)
    // 9 und mehr
	{
	reg_preis = "116,00 Euro"
	rcd_preis = "79,00 Euro"
	krg_preis = "96,00 Euro"
	krc_preis = "69,50 Euro"
	}
  if(zonen==9)
    // Zone 10 SHA
	{
	reg_preis = "49,50 Euro"
	rcd_preis = "36,50 Euro"
	krg_preis = "42,50 Euro"
	krc_preis = "30,50 Euro"
	}
  if(zonen==10)
    // Zone 50 Crailsheim
	{
	reg_preis = "42,50 Euro"
	rcd_preis = "26,50 Euro"
	krg_preis = "35,50 Euro"
	krc_preis = "20,50 Euro"
	}
  if(zonen==11)
    // Zone 50 CR PLUS
	{
	reg_preis = "50,50 Euro"
	rcd_preis = "33,00 Euro"
	krg_preis = "42,00 Euro"
	krc_preis = "26,50 Euro"
	}
}