用google.maps.KmlLayer怎么读取名称含有中文的kml文件

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layer-kml.htm 我用这个例子读取kml
不支持中文名称的 如 路线.kml

怎么解决这个问题呢

var mapLayer = new google.maps.KmlLayer('http://www.****.com/路线.kml');
mapLayer.setMap(map);
把路线.kml改为line.kml 就可以正常读取了。
var mapLayer = new google.maps.KmlLayer('http://www.****.com/line.kml');
mapLayer.setMap(map);