var SH=screen.height;
var Win=(navigator.userAgent.indexOf("Win")!=-1);
var Mac=(navigator.userAgent.indexOf("Mac")!=-1);

if
(SH > 768 && Win)
{document.write('<LINK rel="stylesheet" href="../../css/print.css" type="text/css" media="print" />');}

else
{document.write('<LINK rel="stylesheet" href="../../css/print1.css" type="text/css" media="print" />');}