<center>
<form name="Calc">
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

<table border="4" summary="calculator">
<tr>
<td>
<input type="text"  name="Input" Size="16">
<br>
</td>
</tr>
<tr>
<td>
<input type="button" name="one"   value="  1  " onclick="Calc.Input.value += '1'" />
<input type="button" name="two"   value="  2  " onclick="Calc.Input.value += '2'" />
<input type="button" name="three" value="  3  " onclick="Calc.Input.value += '3'" />
<input type="button" name="plus"  value="  +  " onclick="Calc.Input.value += ' + '" />
<br>
<input type="button" name="four"  value="  4  " onclick="Calc.Input.value += '4'" />
<input type="button" name="five"  value="  5  " onclick="Calc.Input.value += '5'" />
<input type="button" name="six"   value="  6  " onclick="Calc.Input.value += '6'" />
<input type="button" name="minus" value="  -  " onclick="Calc.Input.value += ' - '" />
<br>
<input type="button" name="seven" value="  7  " onclick="Calc.Input.value += '7'" />
<input type="button" name="eight" value="  8  " onclick="Calc.Input.value += '8'" />
<input type="button" name="nine"  value="  9  " onclick="Calc.Input.value += '9'" />
<input type="button" name="times" value="  x  " onclick="Calc.Input.value += ' * '" />
<br>
<input type="button" name="clear" value="  c  " onclick="Calc.Input.value = ''" />
<input type="button" name="zero"  value="  0  " onclick="Calc.Input.value += '0'" />
<input type="button" name="DoIt"  value="  =  " onclick="Calc.Input.value = eval(Calc.Input.value)" />
<input type="button" name="div"   value="  /  " onclick="Calc.Input.value += ' / '" />
<br>
</td>
</tr>
</table>
</form>
</center>

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