datepicker.onafterselect

var _selectDate = $.datepicker._selectDate,
	selectHook = function(id, dateStr){
		var target = $(id),
			inst = this._getInst(target[0]),
			result = _selectDate.call(this, id, dateStr);
		
		onAfterSelect && onAfterSelect(inst);
		
		return result;
	},
	onAfterSelect = function(instance){
		console.log(instance);
	};