function lastday(){
						Date.prototype.daysInMonth = function () {
					   return new Date(this.getFullYear(), this.getMonth()+1, 0).getDate()
								}
						
						var d = new Date();
						document.writeln(d.daysInMonth());
						
						var now = new Date();
						   
							var months = new Array(
							  'January','February','March','April','May',
							  'June','July','August','September','October',
							  'November','December');
						   function fourdigits(number)	{
							  return (number < 1000) ? number + 1900 : number;}
							today =  
							   months[now.getMonth()] + " " +
								", " +
							   (fourdigits(now.getYear()));
							 document.write(today);
}