Thanks for that. I have realised that my separators weren't displaying at all. as I had thought that specifying no skin was permissible. Now I have created a skin based on Default (bu set te background colours to white) and the separators are showing, and they are the same in all browsers.
The actual problem was that IE is inserting an additional space to the right of the image on the menu item. THis hppens with my customised skin and with the default skin, and also with the "old" radcontrols menu.
I am not using text on the menu items, by the way, just a graphic image.
Is there a known way around this? I can't see where this is coming from. Is it IE adding a space to the right of the image, or IE making the menu button bigger than my image?
Here is the code that creates my buttons:
myMenuItem.ImageUrl = "~/App_Themes/" & strTheme & "/Images/" & strImage
myMenuItem.ImageOverUrl = "~/App_Themes/" & strTheme & "/Images/" & strRollover
myMenuItem.Text = ""
I'm not sure how to give you a snapshot of what the difference looks like.