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            },
            {
                "innerX": "3040.9416581371543",
                "innerY": "-313.971340839304",
                "outerX": "3050.921187308086",
                "outerY": "-299.8976458546571",
                "thickness": "17.3",
                "layer": "Sub-Retinal Space",
                "feature": [
                    {
                        "code": "SDD",
                        "description": "Sub-Retinal Drusenoid Deposit"
                    },
                    {
                        "code": "Detached",
                        "description": "Detached, Artifact"
                    }
                ],
                "featureType": "Array"
            }
        ]
    },
    "ChC": {
        "Ghost": [
            {
                "innerX": "-1551.6888433981576",
                "innerY": "-313.2036847492323",
                "outerX": "-1551.6888433981576",
                "outerY": "-313.2036847492323",
                "thickness": "0.0",
                "layer": "ChC",
                "feature": {
                    "code": "Ghost",
                    "description": "Ghost Capillary"
                }
            }
        ]
    },
    "OS": {
        "Missing": [
            {
                "innerX": "-997.9529170931422",
                "innerY": "-217.24667349027635",
                "outerX": "-997.9529170931422",
                "outerY": "-217.24667349027635",
                "thickness": "0.0",
                "layer": "OS",
                "feature": {
                    "code": "Missing",
                    "description": "Missing"
                }
            }
        ]
    }
}
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
}