function prohlizece()
{  
    
    if(navigator.appName == "Netscape" && document.getElementById && navigator.userAgent.indexOf("Opera") < 0) { 
        document.write('<link rel="StyleSheet" href="files/enantis_mozilla.css" type="text/css">');
    }
    else if(navigator.userAgent.indexOf("Opera") > 0) {
        document.write('<link rel="stylesheet" href="files/enantis_opera.css" type="text/css">');
    }
    else if(navigator.appName =="Microsoft Internet Explorer" && navigator.userAgent.indexOf("Opera") < 0) {
        document.write('<link rel="stylesheet" href="files/enantis_iee.css" type="text/css">');
    }
    else {
        document.write('<link rel="stylesheet" href="files/enantis_mozilla.css" type="text/css">');
    }
}

function hide_element(element_id) {
    if (typeof tmp[element_id]!='undefined' && tmp[element_id]=='hid') {
        document.getElementById(element_id).style.display='block';
        tmp[element_id]=['vis'];
    }
    else {
        document.getElementById(element_id).style.display='none';
        tmp[element_id]=['hid'];
    }    
}