function dnes() {
var datum = new Date();
var denVTydnu = new Array("Sunday","Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday");
var retezec = "Today is ";
retezec += denVTydnu[datum.getDay()] + ", ";
retezec += (1 + datum.getMonth()) + "/";
retezec += datum.getDate() + "/";
retezec += datum.getFullYear() + ". ";
document.write( retezec )
}