function initSubnavi(obj) {
	if (obj === undefined) {
		return;
	}
	obj.lists = obj.childElements();
	obj.lists.each(function(el, idx) {
		if (el !== undefined) {
			el.onmouseover = function(){
				this.addClassName("over");
				this.down("a").addClassName("over");
			};
			el.onmouseout = function(){
				this.removeClassName("over");
				this.down("a").removeClassName("over");
			};
			if(el.down("ul")){
	            initSubnavi(el.down("ul"));
	        }
		}
	});
}

document.observe("dom:loaded", function() {
	//initSubnavi($("subnav"));
	mainNav("subnav");
});