RegEx to minimize CSS

I have a strait forward aggregator/minimizer/cacher I've written in node.js. It works quite well now.

I am however wondering if there is any way to improve my minimizing regex calls. Some comments are not striped from the CSS entirely, and I notice a few other hiccups here and there.

Also, considering my abilities with regex, I might be able to do the same in half the calls. :)

Any suggestions will be greatly appreciated.

Thanks.

function minimizeData( _content ) {
    var content = _content;
    content = content.replace( /(\/\*.*\*\/)|(\n|\r)+|\t*/g, '' );
    content = content.replace( /\s{2,}/g, ' ' );
    content = content.replace( /(\s)*:(\s)*/g, ':' );
    content = content.replace( /(\s)+\./g, ' .' );
    content = content.replace( /(\s|\n|\r)*\{(\s|\n|\r)*/g, '{' );
    content = content.replace( /(\s|\n|\r)*\}(\s|\n|\r)*/g, '}' );
    content = content.replace( /;(\s)+/g, ';' );
    content = content.replace( /,(\s)+/g, ',' );
    content = content.replace( /(\s)+!/g, '!' );
    return content;
}