日期选择，可以在多种环境下使用，用JS脚本写的，使用只引用此文件，在要发生事件的选择框里加calendar()就可以显示日期，再点日期，日期 就会输入到编辑框-Date of choice, you can use in a variety of environments, with JS scr ipt written using only reference this file, select the box to add the events calendar () to display the date, and then point the date, the date will be entered into the edit box