diff --git a/web/donation-form-de.htm4 b/web/donation-form-de.htm4
index f51f0711..3b0ab45c 100644
--- a/web/donation-form-de.htm4
+++ b/web/donation-form-de.htm4
@@ -1,230 +1,230 @@
 <!-- donation form -->
 <div class="donate_box">
     <h3>Bitte spenden Sie für Gpg4win, um die Pflege und Weiterentwicklung zu sichern!</h3>
     <p>Zahlen Sie das, was Gpg4win Ihnen wert ist! – Danke!</p>
 
     <ul class="tabs">
       <!-- paypal -->
       <li>
 	<p><i>Spenden via</i></p>
 	<input id="tab1" type="radio" value="paypal" name="paymethod" checked="checked">
 	<label for="tab1">PayPal</label>
 	<div id="paypal_tab" class="tab-content">
 	  <img class="pay-logo" src="img/paypal-logo.png">
 	  <!-- amount -->
 	  <br>
 	  <form name="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post">
 
 	    <div class="amountlabel" id="USD">
 	      <input type="radio" name="amount" value="0" id="amount1" onchange="checkAmount(value)">
 	      <label for="amount1"> $0 </label>
 	      <input type="radio" name="amount" value="10" id="amount2" onchange="checkAmount(value)">
 	      <label for="amount2"> $10 </label>
 	      <input type="radio" name="amount" value="15" id="amount3" onchange="checkAmount(value)">
 	      <label for="amount3"> $15 </label>
 	      <input type="radio" name="amount" value="25" id="amount4" onchange="checkAmount(value)">
 	      <label for="amount4"> $25 </label>
 	      <input type="radio" name="amount" value="" id="freeamount" onchange="checkAmount(value)">
 	      <label for="freeamount" id="freeamountLabelBG">$
 	        <input type="number" name="given_amount" min="0" value="" size="1" id="freeamountLabel"
 	        onchange="freeamount.value=value; checkAmount(value)" onfocus="checkIt(freeamount.checked)">
 	      </label>
 	    </div>
 
 	    <div class="amountlabel" id="EUR">
 	      <input type="radio" name="amount" value="0" id="amount1_E" onchange="checkAmount(value)">
 	      <label for="amount1_E"> 0€ </label>
 	      <input type="radio" name="amount" value="10" id="amount2_E" onchange="checkAmount(value)">
 	      <label for="amount2_E"> 10€ </label>
 	      <input type="radio" name="amount" value="15" id="amount3_E" onchange="checkAmount(value)" checked="checked">
 	      <label for="amount3_E"> 15€ </label>
 	      <input type="radio" name="amount" value="25" id="amount4_E" onchange="checkAmount(value)">
 	      <label for="amount4_E"> 25€ </label>
 	      <input type="radio" name="amount" value="" id="freeamount_E" onchange="checkAmount(value)">
 	      <label for="freeamount_E" id="freeamountLabelBG">€
 	      <input type="number" name="given_amount" min="0" value="" size="1" id="freeamountLabel"
 	        onchange="freeamount_E.value=value; checkAmount(value)" onfocus="checkItE(freeamount_E.checked)">
 	      </label>
 	    </div>
 
 	    <div class="switches">
               <div class="switch-field">
                 <input type="radio" id="switch_left" name="currency_code" value="USD" onchange="currency_choice('USD')">
 	        <label for="switch_left">USD</label>
 	        <input type="radio" id="switch_right" name="currency_code" value="EUR" onchange="currency_choice('EUR')"
                     checked="checked">
 	        <label for="switch_right">EUR</label>
 	      </div>
 
               <div class="switch-field">
 	        <input type="radio" id="onetime" name="frq" checked="checked" onchange="donation_frq('onetime')">
                 <label for="onetime">einmalig</label>
 	        <input type="radio" id="monthly" name="frq" onchange="donation_frq('monthly')">
 	        <label for="monthly">monatlich</label>
 	      </div>
 	    </div>
 
 	    <div id="pay_div">
 	      <!-- list me -->
 	      <p>
 	      <label>
                 <input type="hidden"   name="on0" value="Spende und Namen veröffentlichten">
                 <input type="hidden"   name="os0" value="Nein">
                 <input type="checkbox" name="os0" value="Ja">
                 <span>Meinen Namen in die <a href="donate-de.html#sponsors">Spenderliste</a> eintragen
 		    (ab 20,- EUR).</span>
 	      </label>
 	      <input type="hidden" name="charset" value="utf-8">
 
 	      <!-- feedback -->
 	      <p>
 	      <input type="hidden" name="on1" value="Rückeldung">
 	      <input type="hidden" name="os1" value="">
 	      <textarea value=""   name="os1" placeholder="Ich benutze Gpg4win, weil ..." rows="3" cols="48"></textarea>
 
 	      <!-- pay button -->
 	      <input type="hidden" name="lc" value="DE">
 	      <input id="onetime1" name="cmd" value="_donations" type="hidden">
 	      <input id="recurrent1" name="cmd" value="_xclick-subscriptions" type="hidden" disabled>
 	      <input id="recurrent2" type="hidden" name="p3" value="1" disabled>
 	      <input id="recurrent3" type="hidden" name="t3" value="M" disabled>
 	      <input id="recurrent4" type="hidden" name="a3" value="" disabled>
 	      <input id="recurrent5" type="hidden" name="src" value="1" disabled>
 	      <input name="business" value="paypal@intevation.de" type="hidden">
 	      <input name="undefined_quantity" value="1" type="hidden">
 	      <input name="item_name" value="Gpg4win" type="hidden">
 	      <input name="no_shipping" value="1" type="hidden">
 	      <input name="no_note" value="1" type="hidden">
-	      <input name="image_url" value="https://gpg4win.org/img/logo.png" type="hidden">
+	      <input name="image_url" value="https://gpg4win.org/img/logo_gpg4win_for_paypal.png" type="hidden">
 	      <input name="return" value="https://gpg4win.org/thanks-for-donation-de.html" type="hidden">
 	      <input name="cancel_return" value="https://gpg4win.org/thanks-for-download-de.html" type="hidden">
 	      <input name="cbt" value="Gpg4win jetzt herunterladen!" type="hidden">
 	      <p id="dButton">
 	      <button class="donateButton" name="submit" alt="Spenden via PayPal"
 		  type="submit">Spenden & Herunterladen</button>
 	    </div>
 	  </form>
 
 	  <!-- download -->
 	  <div id="download_div">
 	    <p>
 	      <a href="thanks-for-download.html"><button
 class="donateButton" alt="download">Herunterladen</button></a>
 	    </p>
 	  </div>
 	</div>
       </li>
     
       <!-- bitcoin -->
       <li>
 	<input id="tab2" type="radio" value="bitcoin" name="paymethod">
 	<label for="tab2">Bitcoin</label>
 	<div id="bitcoin_tab" class="tab-content">
 	  <p>
           <img class="pay-logo" src="img/bitcoin-logo.png">
           <p>Bitcoins können Sie uns anonym an folgende Adresse spenden:</p>
           <a href="https://blockchain.info/address/1M3GipkG2YyHPDMPewqTpup83jitXvBg9N">
             1M3GipkG2YyHPDMPewqTpup83jitXvBg9N
           </a>
           <p>
 	  <img class="qrcode" src="img/bitcoin-qrcode.png">
           <p>
 	  Nach Abschluss der Transaktion: <a href="thanks-for-download-de.html">Gpg4win VERSION herunterladen</a>
 	</div>
       </li>
 
       <!-- bank transfer -->
       <li>
           <input id="tab3" type="radio" value="transfer" name="paymethod" >
 	  <label for="tab3">Überweisung</label>
 	  <div id="transfer_tab" class="tab-content">
 	    <b>Spendenkonto:</b>
 	    <blockquote>
 	    Empfänger: Intevation GmbH<br>
 	    IBAN: DE33 2654 0070 0539 2006 00<br>
 	    BIC: COBADEFFXXX (Commerzbank Osnabr&uuml;ck)<br>
 	    Verwendungszweck: "Gpg4win Spende"
 	    </blockquote>
 	    <p>
 	    <a href="mailto:gpg4win-professional@intevation.de">Kontaktieren Sie uns</a>,
 	    wenn Sie eine Rechnung benötigen (nur bei Beträgen ab 100,- EUR).
 	    <p>
 	    Nach Abschluss der Überweisung: <a href="thanks-for-download-de.html">Gpg4win VERSION herunterladen</a>
 	    </p>
 	  </div>
        </li>
       </ul>
 </div>
 
 <script type="text/javascript">
   document.getElementById('download_div').style.display = "none";
   document.getElementById('USD').style.display = "none";
   amountGiven = 0;
 
   function checkAmount(amount) {
     if (amount < 0 ) {
       document.getElementById('amountfield').value = 0;
       amount = 0;
     }
     if (amount == 0) {
       document.getElementById('download_div').style.display = "block";
       document.getElementById('pay_div').style.display = "none";
     }
     if (amount > 0) {
       document.getElementById('download_div').style.display = "none";
       document.getElementById('pay_div').style.display = "block";
     }
     document.getElementById('recurrent4').value = amount;
     amountGiven = amount;
   }
 
   function checkIt(checked) {
     if (!checked) {
       document.getElementById('freeamount').checked = "checked";
     }
   }
 
   function checkItE(checked) {
     if (!checked) {
       document.getElementById('freeamount_E').checked = "checked";
     }
   }
 
   function currency_choice(txt) {
     if (txt == "USD") {
       document.getElementById('USD').style.display = "block";
       document.getElementById('EUR').style.display = "none";
       for (var i = 0; i < 5; i++) {
 	    var v = document.getElementsByName('amount')[i];
 	    if (v.value == amountGiven) {
 	      v.checked = "checked";
 	    }
       }
     }
     if (txt == "EUR") {
      document.getElementById('USD').style.display = "none";
      document.getElementById('EUR').style.display = "block";
      for (var i = 5; i < 10; i++) {
 	   var v = document.getElementsByName('amount')[i];
 	     if (v.value == amountGiven) {
 	       v.checked = "checked";
    	     }
       }
     }
   }
 
   function donation_frq(txt) {
     if (txt == "onetime") {
       document.getElementById('onetime1').disabled= false;
       for (var i=1; i<6; i++) {
 	    document.getElementById('recurrent'+i).disabled= true;
       }
     }
     if (txt == "monthly") {
       document.getElementById('onetime1').disabled= true;
       for (var i=1; i<6; i++) {
 	    document.getElementById('recurrent'+i).disabled= false;
       }
     }
   }
 </script>
diff --git a/web/donation-form.htm4 b/web/donation-form.htm4
index 4f35a7b9..5902ecfa 100644
--- a/web/donation-form.htm4
+++ b/web/donation-form.htm4
@@ -1,230 +1,230 @@
 <!-- donation form -->
 <div class="donate_box">
     <h3>Please donate for Gpg4win to support maintenance and development!</h3>
     <p>Pay what you want! – Thank you!</p>
    
     <ul class="tabs">
 
       <!-- paypal -->
       <li>
 	<p><i>Donate with</i></p>
 	<input id="tab1" type="radio" value="paypal" name="paymethod" checked="checked">
 	<label for="tab1">PayPal</label>
 	<div id="paypal_tab" class="tab-content">
 	  <img class="pay-logo" src="img/paypal-logo.png">
 	  <!-- amount -->
 	  <br>
 	  <form name="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post">
 
 	    <div class="amountlabel" id="USD">
 	      <input type="radio" name="amount" value="0" id="amount1" onchange="checkAmount(value)">
 	      <label for="amount1"> $0 </label>
 	      <input type="radio" name="amount" value="10" id="amount2" onchange="checkAmount(value)">
 	      <label for="amount2"> $10 </label>
 	      <input type="radio" name="amount" value="15" id="amount3" onchange="checkAmount(value)" checked="checked">
 	      <label for="amount3"> $15 </label>
 	      <input type="radio" name="amount" value="25" id="amount4" onchange="checkAmount(value)">
 	      <label for="amount4"> $25 </label>
 	      <input type="radio" name="amount" value="" id="freeamount" onchange="checkAmount(value)">
 	      <label for="freeamount" id="freeamountLabelBG">$
 	        <input type="number" name="given_amount" min="0" value="" size="1" id="freeamountLabel"
 	        onchange="freeamount.value=value; checkAmount(value)" onfocus="checkIt(freeamount.checked)">
 	      </label>
 	    </div>
 
 	    <div class="amountlabel" id="EUR">
 	      <input type="radio" name="amount" value="0" id="amount1_E" onchange="checkAmount(value)">
 	      <label for="amount1_E"> 0€ </label>
 	      <input type="radio" name="amount" value="10" id="amount2_E" onchange="checkAmount(value)">
 	      <label for="amount2_E"> 10€ </label>
 	      <input type="radio" name="amount" value="15" id="amount3_E" onchange="checkAmount(value)">
 	      <label for="amount3_E"> 15€ </label>
 	      <input type="radio" name="amount" value="25" id="amount4_E" onchange="checkAmount(value)">
 	      <label for="amount4_E"> 25€ </label>
 	      <input type="radio" name="amount" value="" id="freeamount_E" onchange="checkAmount(value)">
 	      <label for="freeamount_E" id="freeamountLabelBG">€
 	      <input type="number" name="given_amount" min="0" value="" size="1" id="freeamountLabel"
 	        onchange="freeamount_E.value=value; checkAmount(value)" onfocus="checkItE(freeamount_E.checked)">
 	      </label>
 	    </div>
 
 	    <div class="switches">
 	      <div class="switch-field">
 	        <input type="radio" id="switch_left" name="currency_code" value="USD" onchange="currency_choice('USD')"
                     checked="checked">
 	        <label for="switch_left">USD</label>
 	        <input type="radio" id="switch_right" name="currency_code" value="EUR" onchange="currency_choice('EUR')">
 	        <label for="switch_right">EUR</label>
 	      </div>
 
 	      <div class="switch-field">
 	        <input type="radio" id="onetime" name="frq" checked="checked" onchange="donation_frq('onetime')">
 	        <label for="onetime">onetime</label>
 	        <input type="radio" id="monthly" name="frq" onchange="donation_frq('monthly')">
 	        <label for="monthly">monthly</label>
 	      </div>
 	    </div>
 
 	    <div id="pay_div">
 	      <!-- list me -->
 	      <p>
 	      <label>
 	        <input type="hidden"   name="on0" value="Publish your donation and name">
 		<input type="hidden"   name="os0" value="No">
 		<input type="checkbox" name="os0" value="Yes">
 		<span>Add me to the <a href="donate.html#sponsors">list of sponsors</a>
 		    (from 20,- EUR/USD up)</span>
 	      </label>
 	      <input type="hidden" name="charset" value="utf-8">
 
 	      <!-- feedback -->
 	      <p>
 	      <input type="hidden" name="on1" value="Feedback">
 	      <input type="hidden" name="os1" value="US">
 	      <textarea value=""   name="os1" placeholder="I am using Gpg4win because ..." rows="3" cols="48"></textarea>
 
 	      <!-- pay button -->
 	      <input type="hidden" name="lc" value="US">
 	      <input id="onetime1" name="cmd" value="_donations" type="hidden">
 	      <input id="recurrent1" name="cmd" value="_xclick-subscriptions" type="hidden" disabled>
 	      <input id="recurrent2" type="hidden" name="p3" value="1" disabled>
 	      <input id="recurrent3" type="hidden" name="t3" value="M" disabled>
 	      <input id="recurrent4" type="hidden" name="a3" value="" disabled>
 	      <input id="recurrent5" type="hidden" name="src" value="1" disabled>
 	      <input name="business" value="paypal@intevation.de" type="hidden">
 	      <input name="undefined_quantity" value="1" type="hidden">
 	      <input name="item_name" value="Gpg4win" type="hidden">
 	      <input name="no_shipping" value="1" type="hidden">
 	      <input name="no_note" value="1" type="hidden">
-	      <input name="image_url" value="https://gpg4win.org/img/logo.png" type="hidden">
+	      <input name="image_url" value="https://gpg4win.org/img/logo_gpg4win_for_paypal.png" type="hidden">
 	      <input name="return" value="https://gpg4win.org/thanks-for-donation.html" type="hidden">
 	      <input name="cancel_return" value="https://gpg4win.org/thanks-for-download.html" type="hidden">
 	      <input name="cbt" value="Download Gpg4win now!" type="hidden">
 	      <p id="dButton">
 	      <button class="donateButton" name="submit" alt="Donate via PayPal"
 		  type="submit">Donate & Download</button>
 	    </div>
 	  </form>
 
 	  <!-- download -->
 	  <div id="download_div">
 	    <p>
 	      <a href="thanks-for-download.html"><button class="donateButton" alt="download">Download</button></a>
 	    </p>
 	  </div>
 	</div>
       </li>
 
       <!-- bitcoin -->
       <li>
 	<input id="tab2" type="radio" value="bitcoin" name="paymethod">
 	<label for="tab2">Bitcoin</label>
 	<div id="bitcoin_tab" class="tab-content">
 	  <p>
 	  <img class="pay-logo" src="img/bitcoin-logo.png">
           <p>You can send us bitcoins anonymously to the following address:</p>
           <a href="https://blockchain.info/address/1M3GipkG2YyHPDMPewqTpup83jitXvBg9N">
 	    1M3GipkG2YyHPDMPewqTpup83jitXvBg9N
 	  </a>
 	  <p>
 	  <img class="qrcode" src="img/bitcoin-qrcode.png">
 	  <p>
 	  After making transfer: <a href="thanks-for-download.html">Download Gpg4win VERSION</a>
 	</div>
       </li>
 
       <!-- bank transfer -->
       <li>
 	<input id="tab3" type="radio" value="transfer" name="paymethod" >
 	<label for="tab3">Bank transfer</label>
 	<div id="transfer_tab" class="tab-content">
 	  <b>Bank transfer details:</b>
 	  <blockquote>
 	  Receiver: Intevation GmbH<br>
 	  IBAN: DE33 2654 0070 0539 2006 00<br>
 	  BIC: COBADEFFXXX (Commerzbank Osnabr&uuml;ck)<br>
 	  Reference: "Gpg4win donation"
 	  </blockquote>
 	  <p>
 	  Please <a href="mailto:gpg4win-professional@intevation.de">contact us</a>
 	  if you need an invoice (for more than 100,- EUR/USD only).
 	  <p>
 	  After making transfer: <a href="thanks-for-download.html">Download Gpg4win VERSION</a>
 	  </p>
 	</div>
       </li>
     </ul>
 </div>
 
 <script type="text/javascript">
   document.getElementById('download_div').style.display = "none";
   document.getElementById('EUR').style.display = "none";
   amountGiven = 15;
 
   function checkAmount(amount) {
     if (amount < 0 ) {
       document.getElementById('amountfield').value = 0;
       amount = 0;
     }
     if (amount == 0) {
       document.getElementById('download_div').style.display = "block";
       document.getElementById('pay_div').style.display = "none";
     }
     if (amount > 0) {
       document.getElementById('download_div').style.display = "none";
       document.getElementById('pay_div').style.display = "block";
     }
     document.getElementById('recurrent4').value = amount;
     amountGiven = amount;
   }
 
   function checkIt(checked) {
     if (!checked) {
       document.getElementById('freeamount').checked = "checked";
     }
   }
 
   function checkItE(checked) {
     if (!checked) {
       document.getElementById('freeamount_E').checked = "checked";
     }
   }
 
   function currency_choice(txt) {
     if (txt == "USD") {
       document.getElementById('USD').style.display = "block";
       document.getElementById('EUR').style.display = "none";
       for (var i = 0; i < 5; i++) {
 	var v = document.getElementsByName('amount')[i];
 	if (v.value == amountGiven) {
 	  v.checked = "checked";
 	}
      }
     }
     if (txt == "EUR") {
      document.getElementById('USD').style.display = "none";
      document.getElementById('EUR').style.display = "block";
      for (var i = 5; i < 10; i++) {
 	var v = document.getElementsByName('amount')[i];
 	if (v.value == amountGiven) {
 	  v.checked = "checked";
 	}
       }
     }
   }
 
   function donation_frq(txt) {
     if (txt == "onetime") {
       document.getElementById('onetime1').disabled= false;
       for (var i=1; i<6; i++) {
 	document.getElementById('recurrent'+i).disabled= true;
       }
     }
     if (txt == "monthly") {
       document.getElementById('onetime1').disabled= true;
       for (var i=1; i<6; i++) {
 	document.getElementById('recurrent'+i).disabled= false;
       }
     }
   }
 </script>
diff --git a/web/img/logo_gpg4win_for_paypal.png b/web/img/logo_gpg4win_for_paypal.png
new file mode 100644
index 00000000..4f72e6a2
Binary files /dev/null and b/web/img/logo_gpg4win_for_paypal.png differ