Started working on the ability to select multiple items from the menu (which is done with the spacebar).  Multi-item selection is enabled by setting the multiSelect property to true (which is false by default).  In multi-select mode, the GetVal() function will return an array of selected return values rather than a string.  The display of selected items still needs to be worked on..  Right now it will display a check mark next to selected items after the user scrolls away from the item, and the position of the check mark is currently a little wierd, but multi-select is working.