Can jQuery-UI safely be used without the CSS assets?

Can jQuery-UI safely be used without including the CSS assets? Google hosts the JS file, but I don't see any refe开发者_JAVA百科rences on that page to the jQuery-UI CSS resources. What problems or issues can I expect if I include only jquery-ui.js?

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You'd go from something like this (with jQuery UI CSS):

To something like this (no jQuery UI CSS):

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Use the link @Ates Goral posted in comments

or

Xavi - Links to jQuery UI CSS themes hosted on Google's CDN

for a hosted stylesheet

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Update:

For reference sake, the path for the Google CDN jQuery UI CSS is

http:// ajax.googleapis.com/ajax/libs/jqueryui/[version]/themes/[theme]/jquery-ui.css

example:

http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.13/themes/base/jquery-ui.css

Versions:

1.5.2, 1.5.3, 1.6.0, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.8.0, 1.8.1, 1.8.2, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.8.8, 1.8.9, 1.8.10, 1.8.11, 1.8.12, 1.8.13

Themes:

base, black-tie, blitzer, cupertino, dark-hive, dot-luv, eggplant, excite-bike, flick, hot-sneaks, humanity, le-frog, mint-choc, overcast, pepper-grinder, redmond, smoothness, south-street, start, sunny, swanky-purse, trontastic, ui-darkness, ui-lightness, vader