How can jquery detect when an image map is clicked?

How can jquery detect when an image map is clicked?

I am using a chart control that is generated from asp.net.  Its a bar chart,and each bar  has a tool-tip.  (The tool-tip is a 'title' attribute).  There is an image-map that describes each bar area as a rectangle.  I can capture ordinary clicks on the chart when they are outside of the bars.  But when they are inside of the bars, they don't get captured by the usual on.("click") jquery code.  
Ideally, when the user clicks inside a bar, I would like jquery to capture the tooltip. 
If I can do that, I can make the chart interact with javascript, which would be a real plus, because currently its a purely server side control.

Thanks.