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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",
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var count = 0;

for (var layer in mapOptions){
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        count++;
    }

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

}

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