function fbs_click() {
        u=location.href;
        t=document.title;
        window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'sharer','toolbar=0,status=0,width=626,height=436');
        return false;
}

function linkuj_click() {
        u=location.href;
        t=document.title;
        window.open('http://linkuj.cz/?id=linkuj&url='+encodeURIComponent(u)+'&title='+encodeURIComponent(t),'linkuj');
        return false;
}

function twitter_click() {
        u=location.href;
        window.open('http://twitter.com/home?status='+encodeURIComponent(u),'twitter');
        return false;
}