<center>
<form name="Calc">
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<table border="4">
<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(Math.round(eval(Calc.Input.value)*(Math.pow(10,12)))/(Math.pow(10,12)))"/>
<input type="button" name="div" value=" ÷ " onclick="Calc.Input.value += ' / '"/>
<br/>
</td>
</tr>
</table>
</form>
</center>
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<font face="arial, helvetica" size="-2">Free JavaScripts provided<br/>
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