<script type="text/javascript"> /* This script and many more are available free online at The JavaScript Source!! http://javascript.internet.com Created by: Jay Rumsey | http://www.nova.edu/~rumsey/ */ function UpdateCost() { var sum = 0; var gn, elem; for (i=0; i<5; i++) { gn = 'game'+i; elem = document.getElementById(gn); if (elem.checked == true) { sum += Number(elem.value); } } document.getElementById('totalcost').value = sum.toFixed(2); } </script> <input type="checkbox" id='game0' value="9.99" onclick="UpdateCost()">Game 1 ( 9.99)<br> <input type="checkbox" id='game1' value="19.99" onclick="UpdateCost()">Game 2 (19.99)<br> <input type="checkbox" id='game2' value="27.50" onclick="UpdateCost()">Game 3 (27.50)<br> <input type="checkbox" id='game3' value="45.65" onclick="UpdateCost()">Game 4 (45.65)<br> <input type="checkbox" id='game4' value="87.20" onclick="UpdateCost()">Game 5 (87.20)<br> <input type="text" id="totalcost" value="">

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