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Calendar control and date

Posted By:      Posted Date: August 24, 2010    Points: 0   Category :ASP.Net

I have a calendar control , text box and a button . The calendar is invisible in the page load event. When I click on the button,It becomes visible. On selection of a date it becomes the value of the Text Box.
Having said that, my issue is that when this calendar becomes visible, it ruins the arrrangement of the controls on the  page. As I have other controls on the page they  comepletely get displaced. Is there a way to overlap this calendar over the other controls.
I had seen a control that was  some time ago and it was on the client side(probably using javascript or a third party control ) and It wud overlap the other controls and once a value was selected it became invisible.

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