<form>
<table border=2 cellpadding=3 bgcolor=#E6E9EA><tr><td>
<div align="center"><b>Enter 2 Numbers:</b><br>
<input type=text size=5 name=num1>
<input type=text size=5 name=num2></div></tr></td><tr><td>

<div align="center"><b>Click on a Function</b><br>
<input type=button name=a1  value="  + " onclick="addFields(this.form)">
<input type=button name=a2  value="  -  " onclick="subFields(this.form)">
<input type=button name=a3  value="  x " onclick="mulFields(this.form)">
<input type=button name=a4  value="  /  " onclick="divFields(this.form)"></div>
</td></tr><tr><td>

<div align="center"><B>The Answer is:</B><br>
<input type="text" size=8 name="result"></div></td></tr><tr><td>
<div align="center"><input type=reset name=clear  value="clear fields"></div></td></tr></table>
</form>
</td></table>

<script language="javascript">


function   addFields(form) {
	 var sum = eval(form.num1.value) + eval(form.num2.value)
	form.result.value=sum
	}
function   subFields(form) {
	 var sub = eval(form.num1.value) - eval(form.num2.value)
	form.result.value=sub
	}
function   mulFields(form){
	 var mul = eval(form.num1.value) * eval(form.num2.value)
	form.result.value=mul
	}
function   divFields(form) {
	form.result.value  = eval(form.num1.value) / eval(form.num2.value)
}
</script>