Photo in the header next to Logo

use -250px instead of 0:

<!--[if lte IE 10]>
<style type="text/css">

.header_menu > IMG{

margin-left: -250px!important;

}

</style>
<![endif]-->

Sorry but didn't had an impact

I see it looks well, maybe you need refresh

I have refreshed and deleted Temporary Internet Files, restarted browser and see this

I refreshed the browser and deleted Temp Internet files and restarted browser receiving this:

Maybe defining margin-left for each IE separately could solve problem.

<!--[if eq IE 10]>
<style type="text/css">
.header_menu > IMG{
margin-left: -XXXpx!important;
}
</style>
<![endif]-->

<!--[if eq IE 9]>
<style type="text/css">
.header_menu > IMG{
margin-left: -XXXpx!important;
}
</style>
<![endif]-->


<!--[if lte IE 8]>
<style type="text/css">
.header_menu > IMG{
margin-left: -XXX!important;
}
</style>
<![endif]-->

anyway I could check this while I do rounded corners.