version = navigator.appVersion.toLowerCase();
agent = navigator.userAgent.toLowerCase();
ie = (version.indexOf('msie')>-1);
win = (version.indexOf('windows')>-1);
opera = (agent.indexOf('opera')>-1);

function prn() {
document.write('\074a a  title="Zobrazí dialog pro tisk stránky" class="print" href=\"javascript:goprn();\"\076Print\074/a\076');
}
function goprn() {
window.print();
}