php curl getting the resources(js,css,etc) of the webpage?

for example when i open http://code.google.com/apis/maps/documentat开发者_开发百科ion/examples/geocoding-simple.html for the first time, it doesn't load all the resources right away,but it pulls extra js files after it has loaded.

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You'll need to grab the main HTML page and then parse it looking for external files that also need to be called. Then you would use cURL to download them separately.

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If I'm understanding what you're looking for, you want to defer the loading of external resources until later. That's called lazy loading. Check out this stuff:

http://www.appelsiini.net/projects/lazyload

http://ajaxian.com/archives/a-technique-for-lazy-script-loading

CSS isn't really lazy loading because if it isn't there, the page still does its thing anyway, just in a more ugly way.