If you’re not familiar with OpenLayers library, in breve this is a JavaScript library which interacts with a tile server such as this of OpenStreetMap.org

Vectors

Because it’s JavaScript OpenLayers library it renders different types of vectors when it becomes the case of vectors. It tries the VML way, but as you may know not every browser support it.  Actually everything works fine in every browser, and that’s the good part of OpenLayers, which is one of the best JavaScript organized project I’ve worked with.

The problem is that if you’ve something in the DOM with z-index over the vector layer IE’s giving problems because as it appears it cannot be rendered.

The solution is to draw the layer but skip the .addLayer before the vectors should be seen. You than remove the DOM element, which is over the vector layer you set .setVisibility(true) and the layer appears on the stage.

So far this is the only solution I got, but there may be others.