BasicPicker and DatePicker can't work together

[civet]

I define a BasicPicker after DatePicker.
When I click on DatePicker, console show error: "No InputElement Specified".

finally I found that they are sharing some objects, such as oElemValid, oInputElemValid
so, I think we need deep copies of these objects.

temporary I change this line:
apo.tmp = $.extend({}, $.AnyPicker.tempDefaults);
to
apo.tmp = $.extend(true, {}, $.AnyPicker.tempDefaults);