$.fn.DigitsOnly = function(){
		return this.each(function(){
			$(this).keydown(function(e){
				var key = e.charCode || e.keyCode || 0;
				// allow backspace, tab, delete, arrows, numbers and keypad numbers ONLY
				return (key == 8 || key == 9 || key == 46 ||	(key >= 37 && key <= 40) ||	(key >= 48 && key <= 57) ||	(key >= 96 && key <= 105));
			})
		})
	};