How do I access Telerik HtmlAttributes values via javascript?
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What do I need to do in order to query HtmlAttributes values on a Telerik DropDownList?  I know how to do this via jQuery, but what is the proper way to query these?

        @(Html.Telerik().DropDownListFor(model => model.BookingOfficeIdNew)
                                 .Name("BookingOfficeIdNew")
                                 .HtmlAttributes(new
                                     {
    // How do I access these?
                                         @class = "PropertyProposedValueSelect",
                                         @delta = Model.BookingOfficeIdNew,
                                         @container = "BookingOfficeContainer",
                                         @updateFlag = "BookingOfficeIdChanged",
                                         @deltaValue = "BookingOfficeIdOld",
                                         @newValue = "BookingOfficeIdNew",
                                         @newText = "BookingOfficeNameNew"
                                     })
                                 .ClientEvents(events => events
                                   .OnChange("SelectListValueUpdated")
                                     .OnLoad("OnDropDownListLoad")
                                     .OnOpen("OnDropDownListOpen")
                                   )
                                 .BindTo(Model.BookingOfficeIdChanged ? @Html.ToSelectList(Model.BookingOfficeNameNew, Model.BookingOfficeIdNew, true) : ((SelectListItem)ViewData["DefaultSelectListPrompt"]).ToSelectList(true))
                                 .SelectedIndex(0)
                                 .DataBinding(binding => binding.Ajax().Select("RraOfficeSelectListWithPrompt", "Revision"))
                                 )