Why doesn't my code change the cursor using jquery?

This is my code:

$('body').css('cursor'开发者_开发百科,'url(http://5211.91.tc/imcur/020.cur),auto');

Thanks

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Quirksmode has defined some rules for cursor images, one of them -

The size of the image must be 32x32 pixels or lower. This is a (Windows) OS restriction; not a browser restriction.