<!-- präsentiert von kostenlose-javascripts.de -->
<script type='text/javascript'>
<!--
 function Ergebnis()
 {  
   var x = 0;
   x = eval(window.document.Rechner.Display.value);
   window.document.Rechner.Display.value = x;   
 }
 function Hinzufuegen(Zeichen)
 {  
  window.document.Rechner.Display.value =
  window.document.Rechner.Display.value + Zeichen;   
 }
 function Sonderfunktion(Funktion)
 {  
  if(Funktion == "sqrt")   
   {
     var x = 0;    
     x = eval(window.document.Rechner.Display.value);
     window.document.Rechner.Display.value = Math.sqrt(x);    
   }
   if(Funktion == "pow")   
   {    
     var x = 0;
     x = eval(window.document.Rechner.Display.value);
     window.document.Rechner.Display.value = x * x;    
   }  
   if(Funktion == "log")
   {    
     var x = 0;    
     x = eval(window.document.Rechner.Display.value);
     window.document.Rechner.Display.value = Math.log(x);    
   }
} 

//-->
</script>
<form name="Rechner">
  <table border="10" cellpadding="10" bgcolor="#E0E0E0">
    <tr>
      <td bgcolor="#C0C0C0"><input name="Display" size="30" maxlength="30"></td>
    </tr>
    <tr>
      <td>
   <table>
        <tr>
          <td width="50"><input type="button" value="   7   " onclick="Hinzufuegen('7')"></td>
          <td width="50"><input type="button" value="   8   " onclick="Hinzufuegen('8')"></td>
          <td width="70"><input type="button" value="   9   " onclick="Hinzufuegen('9')"></td>
          <td width="50"><input type="button" value="   +    " onclick="Hinzufuegen('+')"></td>
        </tr>
        <tr>
          <td width="50"><input type="button" value="   4   " onclick="Hinzufuegen('4')"></td>
          <td width="50"><input type="button" value="   5   " onclick="Hinzufuegen('5')"></td>
          <td width="70"><input type="button" value="   6   " onclick="Hinzufuegen('6')"></td>
          <td width="50"><input type="button" value="    -    " onclick="Hinzufuegen('-')"></td>
        </tr>
        <tr>
          <td width="50"><input type="button" value="   1   " onclick="Hinzufuegen('1')"></td>
          <td width="50"><input type="button" value="   2   " onclick="Hinzufuegen('2')"></td>
          <td width="70"><input type="button" value="   3   " onclick="Hinzufuegen('3')"></td>
          <td width="50"><input type="button" value="    *    " onclick="Hinzufuegen('*')"></td>
        </tr>
        <tr>
          <td width="50"><input type="button" value="    =    " onclick="Ergebnis()"></td>
          <td width="50"><input type="button" value="   0   " onclick="Hinzufuegen('0')"></td>
          <td width="70"><input type="button" value="   .    " onclick="Hinzufuegen('.')"></td>
          <td width="50"><input type="button" value="    /    " onclick="Hinzufuegen('/')"></td>
        </tr>
        <tr>
          <td width="50"><input type="button" value="Wurzel " onclick="Sonderfunktion('sqrt')"></td>
          <td width="50"><input type="button" value=" pow " onclick="Sonderfunktion('pow')"></td>
          <td width="70"><input type="button" value=" log " onclick="Sonderfunktion('log')"></td>
          <td width="50"><input type="reset" value="   C   "></td>
        </tr>
        <tr>
           <td colspan="4" style="font-family: Arial; font-size: 12px; text-align: center;"><div id="kostenlosejavascripts" align="center"><a href="http://www.kostenlose-javascripts.de/javascripts.html" title="kostenlose HTML Scripts" target="_blank">kostenlose HTML Scripts</a></div></td>
        </tr>
      </table>
      </td>
    </tr>
  </table>
</form>
<!-- präsentiert von kostenlose-javascripts.de -->