<?php
require('Sajax.class.php');
	
function subtract($a, $b) 
{
   return $a-$b;
}	
	
$sax =& new Sajax();
$sax->export("subtract");
$sax->handleClientRequest();
?>
	
<script>
<?php $sax->showCommonJS(); ?>

function do_subtract_cb(c)
{
   document.getElementById("c").value = c;
}
	
function do_subtract() 
{
   var x, y;
   x = document.getElementById("a").value;
   y = document.getElementById("b").value;
		
   sajax_do_call("subtract", [x,y,do_subtract_cb]);
}		
</script>