When your webchart renders, it creates a div with a table inside. The table has styling on it that gives the table a z-index: 4.
Example code:
<div id="ctl00_x_UltraChart1" style="">
<table id="ctl00_x_UltraChart1_table" style="left:0px; top:0px; position: relative; z-index:4;">
This code resides in a usercontrol that resides on a page. The usercontrol that wraps around your chart has the style scroll:auto. Since your z-index:4 is on your table, the table causes the surrounding div tag to have scrollbars (like it should) but your chart is sitting 'on top' of the div, thus breaking my layout. The chart should be inside my div and scroll, not sit outside of my div.
Is there a way I can change your rendering options for the table that you put the webchart in?