我是Google Maps的新手-我正在尝试更改地图上第二条折线的颜色。var direction = new GDirections();
direction.load("from: Oregon 99, near, Halsey, Oregon to: Oregon 34, near, Tangent, Oregon to: Interstate 5, near, Tigard, Oregon to: Oregon 217, near, Cedar Hills, Oregon to: U.S. 26, near, North Plains, Oreg