How to make Internet Explorer emulate pointer-events:none?

I'm working on a project where we are enhancing highcharts by displaying a gradient PNG over the charts. We are using CSS pointer-events:none; to allow users to interact with the chart despite there being a div layered over the top. IE doesn't recognize pointer-events:none;, so users on IE either can't have enhanced chart design, or can't interact with the charts. I'm looking for a way to get IE to allow mouse events (specificaly hover events), to pass through a div to the elements below it.

Модель того, с чем мы работаем, можно посмотреть здесь: http://jsfiddle.net/PFKEM/2/

Есть ли способ заставить IE делать что-то вроде pointer events:none;, где события мыши проходят через элемент к элементам под ним?