function getElement(aID){
	var rv = (document.getElementById) ? document.getElementById(aID) : document.all[aID];
	return rv;
}

function selectEvent( event_id ) {

	if(! event_id ) {
		return( selectEvent.selected_event );
	}

	if(! selectEvent.selected_event ) {
		selectEvent.selected_event = event_id;
	}

	old_row = getElement( "row_" + selectEvent.selected_event );
	new_row = getElement( "row_" + event_id );

	old_row.style.backgroundColor = '#ffffff';
	old_row.style.color           = '#000000';
	new_row.style.backgroundColor = '#4464ac';
	new_row.style.color           = '#ffffff';

	selectEvent.selected_event = event_id;

}