Go4Expert - help on Javascript form calculating

hi guys... i am in need 4 some help here. just started the javascript and don't know much about it. so .... i'm using HTML form tag to create a test, with 13 questions, each of them with two possibilities, right or wrong. So the user will check 1 radio button completing the 13 questions, the thing is... What javascript code can i use, to calculate the right and the wrong answers ?

this is the basic structure of the code, *Note: value 1 means right, and value 2 means wrong.

HTML Code:

<html>

<head>

<title>My Test</title>

</head>

<body>

<form name="mytest">

<table cellspacing="1" cellpadding="2" border="0">

<tr>

<td>first question.... is it right or wrong ?<input type="radio" name="question1" value="1"> | <input type="radio" name="question1" value="2">

</td>

</tr>

<tr>

<td>this is question 2... is it right or wrong ?<input type="radio" name="question2" value="1"> | <input type="radio" name="question2" value="2">

</td>

</tr>

... etc etc this is how the rest of the code goes, and in the end

HTML Code:

<tr><td><input type="button" value="Calculate Results" onClick="CalcRes()" /></td></tr>

So ... how can i get the value of the radio buttons and display results in a popup box using Javascript ? (not nesecarely in a popup box, a dic would be fine too )
like:
Total right awnswers : (nr of right awnsers)
Wrong awnsers: (nr of wrong awnsers)
Wrong awnsers: (the names of buttons with vale 2, ex: question1, question4 ... )

I need this to run in Client mode only.please help, i'd be very graceful