var months=new Array(13);

months[1]="Ene";
months[2]="Feb";
months[3]="Mar";
months[4]="Abr";
months[5]="May";
months[6]="Jun";
months[7]="Jul";
months[8]="Ago";
months[9]="Sept";
months[10]="Oct";
months[11]="Nov";
months[12]="Dic";

var today=new Date();

var lmonth=months[today.getMonth() + 1];
var date=today.getDate();
var year=today.getFullYear();
var daynum = today.getDay() + 1;

if(daynum==1) day = "Dom";
if(daynum==2) day = "Lun";
if(daynum==3) day = "Mar";
if(daynum==4) day = "Mie";
if(daynum==5) day = "Jue";
if(daynum==6) day = "Vie";
if(daynum==7) day = "Sab";

var todaysdate= (day + " - " + lmonth + " " + date + ", " + year);
document.write(todaysdate);