蓝色垂直导航菜单，菜单是在页面垂直排列，DIV+CSS布局，菜单是白色的，鼠标移动上去会变成蓝色，页面背景是木纹的。-Blue vertical navigation menu, the menu is in pages arranged vertically, DIV+CSS layouts, the menu is white, move the mouse up will turn blue, and the page background is grainy.