long is a reserved keyword in Safari
This is more a note to myself than anything else, but it might help someone pulling their hair out over this particular bug.
Apparently, long is a reserved keyword in the Safari browser (I’m using 2.0.4, but it’s fixed in the WebKit nightlies), so be careful if you’re using it as a variable name—I’ve been working with the Multimap API today, so lat and long seemed like perfectly natural properties of my hotel objects until Safari choked.
According to this list of reserved keywords in JavaScript , long is a Java keyword. I guess Firefox is more forgiving than Safari.
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“long” is a “future reserved word” of ECMAScript-262 (see page 14 of http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf), which is why Safari treats it as such.