Simple opensource javascript library for creating (stacked) line graph?
<p>I need a lightweight javascript library to create a stacked line graph (a bit like what is used in financial graphs). The X axis will be dates and the Y axis will be ordinary float values.</p>

<p>There will be two sections of the graph:</p>

<ol>
<li><p>Top graph which is a line graph. I want to be able to specify the color of a line segment (i.e. joining two dated points)</p></li>
<li><p>The bottom part is just a rectangle/bar which represents the value. Once again, I want to be able to specify the color of the bar for a particular date.</p></li>
</ol>

<p>It would be cool if the library used JQuery (since I have used jQuery in the past) - but even plain old JS code library would be equally useful.</p>
