Thanks for your help Gary, but I don't think that was the issue. Good to know about the "quality" setting, but nothing was there as far as the link to Xara or on many of the pages anything else. On some spare pages where I was placing the new navigation bar, it was overtop of an older "nav bar" made up of linked words. I didn't think much of it at the time because they weren't in use. I then deleted the old links underneath. Still had a problem so I standardized all pages with nav bar to the same size. This helped greatly. But I discovered if I moved the position of a nav bar on one page, several pages up or down in the order were affected the same way, even though there is nothing on the page near enough to them to be of any issue. I'm more or less happy with where they are for now, although I'd prefer to do some fine tuning on a few pages. Oh well... later. Thanks for your contrib!