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                "layer": "OS",
                "feature": {
                    "code": "Short",
                    "description": "Short"
                }
            }
        ]
    },
    "ChC": {
        "Ghost": [
            {
                "innerX": "-23.285568065506652",
                "innerY": "-1.2794268167860798",
                "outerX": "-23.285568065506652",
                "outerY": "-1.2794268167860798",
                "thickness": "0.0",
                "layer": "ChC",
                "feature": {
                    "code": "Ghost",
                    "description": "Ghost Capillary"
                }
            },
            {
                "innerX": "1594.6775844421697",
                "innerY": "235.9263050153531",
                "outerX": "1594.6775844421697",
                "outerY": "235.9263050153531",
                "thickness": "0.0",
                "layer": "ChC",
                "feature": {
                    "code": "Ghost",
                    "description": "Ghost Capillary"
                }
            }
        ]
    },
    "IS Ellipsoid": {
        "Short\/Broad": [
            {
                "innerX": "683.4698055271239",
                "innerY": "-43.756397134083926",
                "outerX": "682.4462640736949",
                "outerY": "-30.706243602865914",
                "thickness": "13.1",
                "layer": "IS Ellipsoid",
                "feature": {
                    "code": "Short\/Broad",
                    "description": "Short\/Broad"
                }
            }
        ]
    }
}
var layers = [];
var icon_base = "https://maps.google.com/mapfiles/ms/micons/";
//var colors = ["mm_20_purple.png", "mm_20_yellow.png", "mm_20_blue.png", "mm_20_white.png", "mm_20_green.png",
//"mm_20_red.png", "mm_20_black.png", "mm_20_orange.png", "mm_20_gray.png", "mm_20_brown.png"];
var colors = ["purple.png", "yellow.png", "blue.png", "lightblue.png", "green.png",
              "red.png", "pink.png", "orange.png"];
var count = 0;

for (var layer in mapOptions){
    console.log(layer);

    var codes = [];

    for (var code in mapOptions[layer]) {
        var icon = icon_base + colors[count];

        codes.push({
            pageName:code,
            pageId:code.replace(/ /g,'_'),
            linkUrl:"loadAnnotation('" + layer + "', '" + code + "', '" + icon + "')",
            icon: icon,
        });

        count++;
    }

    layers.push({
        hasScd:true,
        pageName:layer,
        pageId:layer.replace(/ /g,'_'),
        secondClass:codes
    });

}

var navOptions = {
    styles:{
        logo:{
            imgUrl:'',
            linkUrl:''
        },
        showMore:true,
    },
    firstClass:layers
}