Asynchronous XHR and domain-relative stylesheets

[jcarnett]

I made a few changes to eCSStender to fix some issues I ran into while doing some cross-browser testing for a site I'm working on.

1. I changed XHR to be asynchronous. Because the processing of the next CSS file continues from the XHR callback, synchronous requests cause the call stack to grow deeper as you add more stylesheets. Eventually the JS interpreter will throw an exception. I was seeing this issue with Chrome (~20 stylesheets) and IE (unknown limit, browser hangs). This also has the added benefit of allowing the browser to do other things while stylesheets are being parsed.
2. IE 6 and 7 were always requesting CSS files relative to the current page, even though the link tag used a domain-relative path. I adjusted your test for domain-relative paths to set the current path to the root of the domain.

[aarongustafson]

Thanks man, I'll take a look at these by the beginning of next week.

[aarongustafson]

I posted some inline comments, any thoughts or feedback?

[aarongustafson]

I've incorporated these changes into the current master and will test tomorrow before releasing as 1.2.6.7.