function dateTime()
{

var date = new Date();
var day = date.getDate();
var month = date.getMonth() + 1;
var year = date.getFullYear();
var hour = date.getHours();
var minute = date.getMinutes();
var second = date.getSeconds();
if(minute < 10){
   minute = "0" + minute
    }
if(second < 10){
   second = "0" + second
   }
document.write("Dnes je " + day + "." + month + "." + year + ", " + hour + ":" + minute + ":" + second);

}