I've experience a similar problem before. Here are two possible solutions: The Netscape resize fix script that ships with DW3 and DW4 has an error that leaves a space in the closing comment tag - this can mess up the rest of your markup. On two occasions DW4 became so confused while I was hand-editing a table layout, that it marked valid markup as invalid. On the first I was forced to revert to an old copy of the file and re-add the content. The second time, I was able to use the history pallete to undo the problem. I know it's not much of an answer, but I hope it helps! Andy >>> John.Bedard at trw.com 04/11/01 01:10PM >>> Can anyone tell me why Dreamweaver 4 deletes my </head> and <body> tags? When I manually insert them back in, DW highlights them as invalid markup. My files still display in the browser but I'm initializing a dropdown menu in the body tag, so it doesn't fire off.