// JavaScript Document
function highlight(_obj) {
	classStr="";
		switch (_obj.className) {
		  case "nav1normal": classStr="nav1select"; break;
		  case "nav1select": classStr="nav1normal"; break;
		  case "nav2normal": classStr="nav2select"; break;
		  case "nav2select": classStr="nav2normal"; break;
		}
	_obj.className=classStr;
	}