var today=new Date();
var week = ['Sunday', 'Monday', 'Tuesday', 'Wednesday','Thursday','Friday','Saturday'];
document.write(week[today.getDay()] + ", " + (today.getMonth() + 1) + '/' + today.getDate() + '/' + today.getFullYear());

//var str = today.toLocaleString();
//var idx = str.indexOf(today.getFullYear());
//document.write(str.substring(0,idx+4));