var my_last = 'ul.box_menu li.bt_lifestyle';
var classes = new Array('bt_lifestyle','bt_music','bt_gear','bt_roadtrip','bt_fashion');
var cls_id = 0;
var t;
function run_home() {
	//menu_left
	$('ul.box_menu li').mouseover(function(){
		clearTimeout(t);
		var show = $(this).attr('class');
		show = show.split(' ');
		menu_left_hide(show[0]);
	}).mouseout(function(){
		set_timer();
	});
}
function menu_left_hide (show) {
	toggle_class(my_last);
	my_last = 'ul.box_menu li.'+show;
	toggle_class(my_last);
	$('div.ct_bt_lifestyle').hide();
	$('div.ct_bt_music').hide();
	$('div.ct_bt_gear').hide();
	$('div.ct_bt_roadtrip').hide();
	$('div.ct_bt_fashion').hide();
	$('div.ct_'+show).fadeIn('fast');
}
function toggle_class (ref) {
	$(ref).toggleClass('active');
}
$(document).ready(function() { 
	toggle_class(my_last);
	set_timer();
	run_home();
});


function walk_home () {
	++cls_id;
	menu_left_hide(classes[cls_id%5]);
	set_timer();
}

function set_timer () {
	t = setTimeout('walk_home()',5000);
}