When showing more than one graph in Opera (newest version, 9.21), there are problems with tooltip generation.
The first graph is not a problem; tooltips nicely display at the mouse pointer location. The second graph however, shows the tooltip about 250 pixels ABOVE the mouse pointer location, and the third graph shows the tooltip about 500 pixels above the mouse pointer location.
Needless to say that fourth, fifth, etc graph don't show a tooltip at all, because apparantly it is displayed somewhere out of reach of the screen.
Is this a known issue? Is this a bug in Opera, or is it a bug in overlib.js for Opera??
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