function attachExtraFilters() {
	/* attach extra filter options once left nav has been built by googleParametric.js */
	
 	var filters =  $('div#mtParametric').find('ul.filter:first'); //$('ul.filter', $('div#mtParametric'));
 	var extraFilters = $('div#extraFilters');
 	var extraByKeyword = $('li#extraByKeyword');
 	var extraByDate = $('li#extraByDate');
 
 	//if (filters.children('li').length > 0) {
 		// add extra filters
 		extraByKeyword.clone(true).prependTo(filters); 	
 		extraByDate.clone(true).appendTo(filters);
	//}
	
	// clean up
	extraFilters.remove();
	
	// re-attach date picker 
	$('#datesearchfrom, #datesearchto').datepicker({
		changeMonth:true,
		changeYear:true,
		showOn: 'button', 
		buttonImage: '/_res/img/icon_calendar.gif', 
		buttonImageOnly: true
	});	
}