<html><head>
</head><body><form name="cal">
<tb>
<input type="text" name="nams" size="40">
</tb>
<p></p>
<input type="button" value=" 1 " onclick="document.cal.nams.value += '1'">
<input type="button" value=" 2 " onclick="document.cal.nams.value += '2'">
<input type="button" value=" 3 " onclick="document.cal.nams.value += '3'">
<input type="button" value=" + " onclick="document.cal.nams.value += ' + '">
<p></p>
<input type="button" value=" 4 " onclick="document.cal.nams.value += '4'">
<input type="button" value=" 5 " onclick="document.cal.nams.value += '5'">
<input type="button" value=" 6 " onclick="document.cal.nams.value += '6'">
<input type="button" value=" - " onclick="document.cal.nams.value += ' - '">
<p></p>
<input type="button" value=" 7 " onclick="document.cal.nams.value += '7'">
<input type="button" value=" 8 " onclick="document.cal.nams.value += '8'">
<input type="button" value=" 9 " onclick="document.cal.nams.value += '9'">
<input type="button" value=" x " onclick="document.cal.nams.value += ' * '">
<p></p>
<input type="button" value=" c " onclick="document.cal.nams.value = ''">
<input type="button" value=" 0 " onclick="document.cal.nams.value += '0'">
<input type="button" value=" = " onclick="document.cal.nams.value = eval(cal.nams.value)">
<input type="button" value=" / " onclick="document.cal.nams.value += ' / '">
<input type="button" value=" . " onclick="document.cal.nams.value += '.'">
</form>
</body></html>