Hover not working in Internet Explorer. As Woody suggested, this problem can be overcome by adding some background color, but of course, even with minimal opacity, this is not the UI we want as the navigation must be transparent. One fix I did stumble across was to set the opacity property of realtime-windowsserver.com-nav-icon rather than the display property. onmouseover swapimage not working in IE The goal is to hover over a sentence in the left column, and the image pops up in right column. Works in Chrome and other browsers, BUT NOT IN IE Reviews: The results are in! See what nearly 90, developers picked as their most loved, dreaded, and desired coding languages and more in the Developer Survey.