I am working on testing a grid control that has select all rows enabled. Overall it is working great. I have noticed though that the select all functionality in the control in IE8 is quite a bit poorer than in other browsers (IE9, Chrome, Firefox, etc) Once I get over 10 items in a row the select all often takes several seconds to become enabled. In other browsers there is very little delay if any. Is this something in how IE8 handles the javascript? Or are there some possible optimizations that could be suggested.