solanos,
<!DOCTYPE html>
<html>
<head>
<script src='http://code.jquery.com/jquery-latest.js'></script>
<script type='text/javascript'>
$(function (){
var arr = [[10,100],[20,200],[30,300],[40,400],[50,500]];
$(':checkbox').click(function(){
var summ1=0, summ2 = 0;
$(':checked').each(function(){
summ1 += arr[+this.value][0];
summ2 += arr[+this.value][1];
});
$('#rezultat1').text("Сумма 1=" + summ1);
$('#rezultat2').text("Сумма 2=" + summ2);
});
});
</script>
</head>
<body>
<form name="Sum">
<div>
<input type="checkbox" class="class1" value="0"/>
<input type="checkbox" class="class1" value="1"/>
<input type="checkbox" class="class1" value="2"/>
<input type="checkbox" class="class1" value="3"/>
<input type="checkbox" class="class1" value="4"/>
</div>
<div>
<output id="rezultat1">Сумма 1=0</output>
<output id="rezultat2">Сумма 2=0</output>
</div>
</form>
</body>
</html>