function umrech() 
{ 
checkform () 
var b=document.form.geld.value; 
var d=0;
if (document.form.currency.selectedIndex == 0) 
  { 
if (document.form.devis.selectedIndex == 0){d = 13.7603;}
if (document.form.devis.selectedIndex == 1){d = 40.3399;}
if (document.form.devis.selectedIndex == 2){d = 1.95583;}
if (document.form.devis.selectedIndex == 3){d = 5.94573;}
if (document.form.devis.selectedIndex == 4){d = 6.55957;}
if (document.form.devis.selectedIndex == 5){d = 2.20371;}
if (document.form.devis.selectedIndex == 6){d = 0.787564;}
if (document.form.devis.selectedIndex == 7){d = 1936.27;}
if (document.form.devis.selectedIndex == 8){d = 40.3399;}
if (document.form.devis.selectedIndex == 9){d = 200.482;}
if (document.form.devis.selectedIndex == 10){d = 166.386;}
var x = b*d;
document.form.euro.value = ""; 
var z=Math.round(x*100)/100 
if(document.form.rund[0].checked == true){document.form.euro.value = z;} 
else {document.form.euro.value = x;} 
  } 
else
  {
if (document.form.currency.selectedIndex == 1) 
    {
if (document.form.devis.selectedIndex == 0){d = 13.7603;}
if (document.form.devis.selectedIndex == 1){d = 40.3399;}
if (document.form.devis.selectedIndex == 2){d = 1.95583;}
if (document.form.devis.selectedIndex == 3){d = 5.94573;}
if (document.form.devis.selectedIndex == 4){d = 6.55957;}
if (document.form.devis.selectedIndex == 5){d = 2.20371;}
if (document.form.devis.selectedIndex == 6){d = 0.787564;}
if (document.form.devis.selectedIndex == 7){d = 1936.27;}
if (document.form.devis.selectedIndex == 8){d = 40.3399;}
if (document.form.devis.selectedIndex == 9){d = 200.482;}
if (document.form.devis.selectedIndex == 10){d = 166.386;}
var x = b/d;
document.form.euro.value = ""; 
var z=Math.round(x*100)/100 
if(document.form.rund[0].checked == true){document.form.euro.value = z;} 
else {document.form.euro.value = x;} 
    }
  }
}

function checkform () 
{ 
if (document.form.geld.value == "") 
alert ("Betrag eingeben"); 
document.form.geld.focus (); 
document.form.geld.select (); 
}