<form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
  <input type="hidden" name="cmd" value="_s-xclick" />
  <input type="hidden" name="hosted_button_id" value="5AW76MSREHKL4" />
  <table>
    <tr>
      <td>
        <input type="hidden" name="on0" value="Iznos - amount"/>
        Iznos - amount
      </td>
    </tr>
    <tr>
      <td>
        <select name="os0">
          <option value="60">
            60 €6.00 EUR
          </option>
          <option value="130">
            130 €12.00 EUR
          </option>
          <option value="260">
            260 €24.00 EUR
          </option>
          <option value="400">
            400 €35.00 EUR
          </option>
          <option value="620">
            620 €55.00 EUR
          </option>
          <option value="1200">
            1200 €100.00 EUR
          </option>
          <option value="5300">
            5300 €420.00 EUR
          </option>
        </select>
      </td>
    </tr>
  </table>
  <input type="hidden" name="currency_code" value="EUR" />
  <input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" title="PayPal - The safer, easier way to pay online!" alt="Buy Now" />
</form>