I am trying to extend a ComboBox control I extend the control in the following code. The issue I am having is how can I create the new LocalComboBox within my ASPX page.
I don't want to create the new control from javascript either I want to be able to add it into the html

Ext.form.LocalComboBox = Ext.extend(Ext.form.ComboBox, {
selectOnFocus: true,
forceSelection: false,
setValue: function(v)
// --- When user types a value into a combobox Ext creates a filter on the
// --- data store attached to the combobox to filter the values displayed to the user.
// --- Later, if setValue() is called, this filter is still set in the data store and
// --- the combo box may not display the text associated with the value.
// --- To work around this, clear the data store filter
// --- Then call base class setValue() function
Ext.form.LocalComboBox.superclass.setValue.call(this, v);