I have been through some of the posts here &lifier elsewhere regarding IE's handling of z-index contexts and may make use of an extra group of eyes.

the website under consideration is:

I am looking to get the #site-index span a tags to sit down on the top from the image header within the #branding element.

considering the code, you will notice I have taken a couple of stabs in the positioning and z-index stacking for the entire chain of DOM elements within Branding but IE continues to be fussing.

Does anything appear unnatural or else struggling with an apparent ommision or eror?

Thanks ahead of time.

There is no URL inside your publish however it seems like you may want to stick a z-index around the #branding element even when it's using relative positioning.