bad container positioning when using in modal

[alih70442]

problem: when you attach datepicker to a textField that is placed in a modal, and the modal has vertical scroll,
after scrolling, the datepicker container is positionate like a fixed dom.
It happens because, datepicker has absolute position relative to body, not relative to its own textInput.

[sortheme]

problem: when you attach datepicker to a textField that is placed in a modal, and the modal has vertical scroll, after scrolling, the datepicker container is positionate like a fixed dom. It happens because, datepicker has absolute position relative to body, not relative to its own textInput.

hi, do you have any idea to fix this?