map api problems in some browsers

Hi there, not sure if this is the right place for this bout would really appreciate any help: I have embedded some code in my website to link to a map of my place in SL. It works perfectly in Safari but not in either netscape or Firefox or Explorer... anyone know what's up?

Please look at my clumsily adapded source code at www.deviantmedia.co.uk/map.html

Thanks people.

Rob