jQuery select element fail

This error in Firebug: missing ) after argument list [Break On This Error] $('select >开发者_运维问答 option:contains('100')').attr('selected',true);

$('select > option:contains('100')').attr('selected',true);

No idea why?? i'm trying to set 100 as the selected option in a PHP built select element

$('select > option:contains(\'100\')').attr('selected',true);