$(document).ready(function(){
		var $tabs = $('#mainContent > ul').tabs({  fx: [null, { height: 'toggle', opacity: 'toggle', duration: 'slow'  }]  });

		$(document).keyup(function(event){
			if (event.keyCode == 39) {
				var cur_tab = $tabs.data('selected.tabs') + 1;
				
				if ($tabs.tabs( "length" ) > cur_tab) {
					$tabs.tabs('select', cur_tab);
				} else {
					$tabs.tabs('select', 0);
				}

				return false;
			}
		});

		$(document).keyup(function(event){
			if (event.keyCode == 37) {
				var cur_tab = $tabs.data('selected.tabs') - 1;

				if (cur_tab >= 0) {
					$tabs.tabs('select', cur_tab);
				} else {
					$tabs.tabs('select', $tabs.tabs( "length" ) - 1);
				}

				return false;
			}
		});

	});