Please implement file filtering on the Open Dialog Window via the accepts property of the rendered HTML 5 input file control. 

The current implementation provides file filtering via flash or silverlight but this functionality is built into the <input type="file"/> control by adding the accepts property. In order to provide file filtering for all modern browsers, without using plugins, the accepts property would only need to be added to the already rendered file control. <input type="file" accepts="image/jpeg, image/gif" />

I have made this change via developer tools in each major browser and it worked fine across the HTML 5 compliant browsers (FF, Chrome, IE).