Expanding Drop Down Area Above Instead Of Below With Javascript?
Nov 29, 2010
Ok so the story is my users need a multi-select dropdownlist, which doesn't exist in ASP.NET, so the simple solution I'm going with is I'm using listboxes with multiselect on and I start them off at size 1, and onmouseover I change the size to say 10, onmouseout sets it back to one. Simple enough and the users don't know the difference.
Now, my issue comes from the fact that since I have any number of controls on my web app, I've set these listboxes to higher z-index numbers than the other controls, which creates a problem: on my listboxes closer to the bottom of the page the list expands below and not above, and part of the listbox goes under the bottom of the page but since onmouseout resets the size of the listbox I can't scroll the page down.
Does anybody know what I need to set to make it expand up instead of down?
edit Also, some may ask "why don't you just rearrange the listbox to a higher position in the page," the reason this isn't a viable option is I have well over 40 controls on the page and it they're grouped cohesively, I didn't just randomly place them where they are.(ie. investment info in one section, account in another, suitability in another)
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