Not well positionned when input is in a hidden div

[GoogleCodeExporter]

What steps will reproduce the problem?
1. create a div with style="display:hidden" positionned in the middle of
the screen and add it a DatePicker plugin
2. make the div appear (display:block)
3. the datepicker frame will appear on top left corner instead of under the
input itself

What is the expected output? What do you see instead?
i expect the datepicker to appear tight under the input

What version of the product are you using? On what operating system?
last .js found on this webiste (in Source). I'm working on FF 3.5.x

Please provide any additional information below.
I fixed it. Change cumulativeOffset to viewportOffset on line 584 and 623
and also remove !this._isPositionned on line 621 since you can't change it
during initialisation (missing code during constructor)

works fine now for me.

Original issue reported on code.google.com by [email protected] on 25 Nov 2009 at 4:36