Thanks for that feedback. I don't have a Mac to test with so if anyone has problems and has suggestions for specific changes to the HTML which would benefit the Mac, feel free to let me know.
The screenshots seem a little dated but everything went fine on the text walkthrough.
@ Karen: this won't be much help to any Mac-users since "outdated" is a little eufemistic, what they show is a really old system for the mac.
Yo guys I am a longtime Mac Consultant one thing to mention is on OS X the default install should include the Thai language but if a custom install of the OS was made on your computer it is possible it is missing and needs to be installed from the OS X disc.
Firefox 3 will arguably be more compatible with most sites simply because of greater market share and testing.
whatever you do there is still a massive problem with displaying html in thai because most webmaster lessons in thai teach the webmaster to declare a tis-620 encoding in the metas of the head of the html of the page.. this is erroneous and causes the browser to display a load of danish looking noughts and crosses.. the only way to display Thai automatically in a browser is to declare a windows-874 encoding in the head of the html page you are designing..
See my posting in "this thread". No matter what you put in the HTML file, your pages will not "display perfectly" if the HTTP header specifies the wrong character set. This setting cannot be authored in the HTML file, it must be configured on the web server.