Hello. I need some help with an error that I got in IE8.

I'm working in a web app which uses jQuery (1.4.2) and Prototype (1.6.0.1). I included the jQuery Sparklines plugin (http://omnipotent.net/jquery.sparkline/) and I am having some errors when I try to draw a sparkline using that plugin.

For example, I include the following HTML:

Code:
<span id="span1">5,3,5,7,9</span>
<script type="text/javascript">
jQuery('#span1').sparkline('html');
</script>
This code always raises an exception from within prototype.js file, and sometimes it does the same with jquery.js file. The only error description I see when I double-click error icon in IE status bar is Failed - this appears for both errors.

I have already included jQuery.noConflict() in order to avoid the known conflicts between jQuery and Prototype, but I cannot prevent the exceptions from appearing in IE8. Not sure if this happens because of some problem within the sparkline library or there is some other problem related to jQuery+Prototype.

By the way, when the exception is thrown from within jQuery, the sparkline is not even drawn

Any help on this will be appreciated.