Need: javascript dropdown replacement widget

I need to address the following problem:

• In IE the dropdown body is what dictates the width of the dropdown. If i set dropdown width to 100px then the body will get cut off if its wider.

Last time (4 months ago) i looked for a suitable widget i found the following problems

1. Not all dropdown keyboard shortc开发者_开发技巧uts supported: up/down arrows, press letter to go to option starting with that letter (this is a deal breaker)
2. Most widgets would transform an existing widget, which is an unnecessary step for me. (though not a deal breaker)

question: Has there been any new dropdown widgets out or any that i have missed that i should consider. I use jquery, but i will look at any framework.

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RAD ComboBox?

http://www.telerik.com/products/aspnet-ajax/combobox.aspx