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    <p>Without Javascript, no - Definately not.</p> <p>Parsing the text inside the span next to each radio using Javascript, yes - but quite tricky</p> <p>Adding an extra attribute to the radio containing the raw amount, use Javascript, yes - not very hard</p> <p>Adding an extra attribute (preferably <code>data-amount</code>), get using a library such as jQuery, yes - easy peasy lemon squeezy!</p> <hr> <p>An example for you using jQuery.</p> <p>Augmenting each of your radio's like:</p> <pre><code>&lt;input class="radio" type="radio" name="keystage1yr1" value="Paper" data-price="25" /&gt; &lt;span&gt;&amp;#163;25&lt;/span&gt; </code></pre> <p>Add a total field like:</p> <pre><code>&lt;input id="total" type="text"&gt; </code></pre> <p>And use the following code.</p> <pre><code>var values = {}; // index to store the selection from each named group of radio's $('input:radio').change(function(){ var name = $(this).attr('name'); values[name] = parseFloat($(this).data('price')); var total = 0.0; $.each(values,function(i,e){ total += e; }); $('#total').val(total.toFixed(2)); }); </code></pre> <p>Live example: <a href="http://jsfiddle.net/UL2JP/" rel="nofollow">http://jsfiddle.net/UL2JP/</a></p> <hr> <p><strong>Edit</strong>, the code above does only add up those checkboxes which are checked, unfortunately, it caches what has previously been selected in the javascript object <code>values</code>. If you, through code, unselect some checkboxes, you need to re-calculate what is selected.</p> <p>An update to this code appears to do what you describe in your comments:</p> <pre><code>var values = {}; $('input[name="keystage1save"]').click(function(){ $('input:radio:not([name="keystage1save"])').prop('checked',false); values = {}; }); $('input:radio').change(function(){ var name = $(this).attr('name'); values[name] = parseFloat($(this).data('price')); var total = 0.0; $.each(values,function(i,e){ total += e; }); $('#total').val(total.toFixed(2)); }); </code></pre> <p>Live example: <a href="http://jsfiddle.net/UL2JP/1/" rel="nofollow">http://jsfiddle.net/UL2JP/1/</a></p> <hr> <p><strong>Edit 2</strong>: Just a thought, there is no need really to cache the selected values, it would be faster to just calculate on the fly:</p> <pre><code>$('input[name="keystage1save"]').click(function(){ $('input:radio:not([name="keystage1save"])').prop('checked',false); }); $('input:radio').change(function(){ var total = 0.0; $('input:radio:checked').each(function(){ total += parseFloat($(this).data('price')); }); $('#total').val(total.toFixed(2)); }); </code></pre> <p>Live example: <a href="http://jsfiddle.net/UL2JP/2/" rel="nofollow">http://jsfiddle.net/UL2JP/2/</a></p>
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    1. COAdding an attribute would not be valid HTML 4, right?
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    2. COIs it possible to add something like price="20" etc for each radio button and then add these up?
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    3. CONo, it would be valid HTML5 which is better ;)
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