Implementing datepicker within a datalist

Hello All,
I am trying to create a date picker inside a data list. I have a text box and an image button inside a data list. On clicking the image button I want a calendar to pop-up and the user should be able to select the date from the calendar.After the selection of date the calendar should be hidden and the date should be populated in the text box.Please help me to do this.Please do reply.
 
 
 Regards
 
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