function check_order_form() {
   if(document.forms['order'].Payment.value == "pavedimu") {
      document.forms['order'].action = "";
   }
   if(document.forms['order'].Payment.value == "lizingas") {
      document.forms['order'].action = "";
   }
}

var MinimumAmounts = new Array();
MinimumAmounts['hanza'] = 200;
MinimumAmounts['vb2'] = 700;
MinimumAmounts['vb'] = 200;
MinimumAmounts['nord'] = 500;
MinimumAmounts['snoras'] = 100;
MinimumAmounts['sampo'] = 100;
MinimumAmounts['ukio'] = 100;
MinimumAmounts['barcode'] = 1000;
MinimumAmounts['hanza2'] = 100;
MinimumAmounts['webmoney'] = 100;
MinimumAmounts['egold'] = 100;

function check_amount(form) {
   check_order_form();
   type = form.Payment.value;
   amount = form.Amount.value;
   msg = null;
   if(!isNaN(parseInt(MinimumAmounts[type])) && MinimumAmounts[type] > amount) {
      msg = 'Minimali atsiskaitymo suma šiuo būdu yra ' + MinimumAmounts[type]/100 + ' Lt.';
   }
   if(msg) {
      alert(msg);
      return false;
   }
   return true;
}