You need to fetch all "numbers" manually
like this:
var currentdate = new Date(); _x000D_
var datetime = "Now: " + currentdate.getDate() + "/"_x000D_
+ (currentdate.getMonth()+1) + "/" _x000D_
+ currentdate.getFullYear() + " @ " _x000D_
+ currentdate.getHours() + ":" _x000D_
+ currentdate.getMinutes() + ":" _x000D_
+ currentdate.getSeconds();_x000D_
_x000D_
document.write(datetime);
_x000D_