Javascript Date Time Picker - Default Time Value

I am using this script for a Javascript Date and Time picker. h开发者_如何学JAVAttp://www.rainforestnet.com/datetimepicker.htm

After a few modifications I have gotten everything to work as I'd like it to minus the default time.

By default, if a time is not selected from the drop down menus initiating the onChange event, the time defaults to the current time. I need this to default to 12:00am. I Have looked through the code and have tried several changes but cannot get this to work the way I'd like. Any help would be greatly appreciated.