function facebook_click() { 
    var uri = encodeURIComponent(location.href.split('#')[0]);
    window.open('http://www.facebook.com/sharer.php?u='+uri, 'sharer', 'toolbar=no, status=no, width=626, height=436'); 
    return false; 
} 
function twitter_click() { 
    var uri = encodeURIComponent(location.href.split('#')[0]);
    window.open('/fileadmin/sharer.php?service=twitter&url='+uri, 'sharer', 'toolbar=no, status=no, width=626, height=436'); 
    return false; 
}