[jQuery] help with array for flot

[jQuery] help with array for flot


I'm playing with the flot plugin (http://code.google.com/p/flot/) and
need a little help
I want to take data from a series of text inputs (Quantity/Price
pairs) and plot them when a button is clicked.
I just don't understand enough about javascript and arrays to know how
to make an array from the inputs (I suspect it's simple)
I have this test page, which uses a hardcoded array to draw the graph:
http://www.monkeypuzzle.net/testfiles/jquery/flot/flot-test-1.htm
How do I get from:
            <table>
                <tr>
                    <td>1</td>
                    <td><input type="text" class="qty"></input></td>
                    <td><input type="text" class="price"></input></td>
                </tr>
                <tr>
                    <td>2</td>
                    <td><input type="text" class="qty"></input></td>
                    <td><input type="text" class="price"></input></td>
                </tr>
                <tr>
                    <td>3</td>
                    <td><input type="text" class="qty"></input></td>
                    <td><input type="text" class="price"></input></td>
                </tr>
                <tr>
                    <td>4</td>
                    <td><input type="text" class="qty"></input></td>
                    <td><input type="text" class="price"></input></td>
                </tr>
                <tr>
                    <td>5</td>
                    <td><input type="text" class="qty"></input></td>
                    <td><input type="text" class="price"></input></td>
                </tr>
            </table>
to this?:
var d1 = [[5, 10], [10, 15], [20, 20], [30, 25], [40, 25]];
thanks!
rolf