use the @import attribute within a stylesheet or define media type print of screen withing the link in your header
<link href="css/global.css" rel="stylesheet" type="text/css" title="global">
<link href="css/print.css" rel="stylesheet" type="text/css" media="print">
this will then print your styles in this CSS and ignore your global one
Search for css @import for more details on this.
Or what the cosby said ^^