disaply a control over another.

Hi.
I'm using a popup calender with some code i've found here.
So because it's not something sophisticated (just a calander, pops and get a value), i was wondering if there is a way to make it appear above another control.When i appears now it's half hidden behind a Listview.I could make it appear above but i want it to be next to the textbox that it sets the value.
Thanks

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