Strange problem. ( Internet Explorer importExportFavorites function )

Hi. I'm to write a php class to implement a roaming Favorites function. With the javascript:window.external.ImportExportFavorites(false,'http://www.foo.com/p ost.php') it is possible to export all your links to a spesific url in the Netscape Bookmark format. My problem is that the Netscape Bookmark format is designed by some stupid guys that didn't tink about closing their tags - ie. no </p> and </dt> .. if they could have done this, I could simply add the <?xml version="1.0" ?> to the top of the input - and parse it as an xml file. So I have to go through the input - and add some tags and straighten things up before I use it... And this is where the really strange things starts to happen: When the file is posted - The PHP_POST_VARS contains the input file - split up by all the &'s and ='s in the file - this ain't no big problem to fix. BUT: Suddently a lot of _________ is appearing... and it even starts to underscore some of the text; like <H3_FOLDED_ADD.... etc. Why does this happen?? Has anyone got a clue? Regards, Lars Wilhelmsen