mapInfo = {
    "mapName": "GZYNWCS",
    "rackCount": 2,
    "crnCount": 1,
    "stbCount": 9,
    "hpPosition": 0,
    "minBayNo": 2,
    "floors": 1,
    "racks": [{
        "type": "rack",
        "id": "rack1",
        "top": 168,
        "left": 463,
        "width": 826,
        "height": 24,
        "minBayNo": 2,
        "maxBayNo": 18
    }, {
        "type": "rack",
        "id": "rack2",
        "top": 226,
        "left": 463,
        "width": 826,
        "height": 24,
        "minBayNo": 2,
        "maxBayNo": 18
    }],
    "rackDescs": [{
        "type": "rackDescs",
        "id": "lb_desc2",
        "text": "#2",
        "top": 253,
        "left": 1246,
        "width": 33,
        "height": 23
    }, {
        "type": "rackDescs",
        "id": "lb_desc1",
        "text": "#1",
        "top": 142,
        "left": 1249,
        "width": 30,
        "height": 23
    }],
    "crns": [{
        "type": "crane",
        "id": "crn-1",
        "text": "1",
        "top": 199,
        "left": 606,
        "width": 93,
        "height": 22
    }, {
        "type": "track",
        "id": "lb_track1",
        "text": "",
        "top": 210,
        "left": 386,
        "width": 950,
        "height": 2
    }],
    "stns": [{
        "type": "stn",
        "id": "site-106",
        "text": "106",
        "top": 226,
        "left": 311,
        "width": 75,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-109",
        "text": "109",
        "top": 168,
        "left": 1291,
        "width": 57,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-107",
        "text": "107",
        "top": 226,
        "left": 387,
        "width": 74,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-105",
        "text": "105",
        "top": 226,
        "left": 235,
        "width": 75,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-103",
        "text": "103",
        "top": 168,
        "left": 361,
        "width": 100,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-101",
        "text": "101",
        "top": 168,
        "left": 159,
        "width": 100,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-108",
        "text": "108",
        "top": 226,
        "left": 1291,
        "width": 118,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-102",
        "text": "102",
        "top": 168,
        "left": 260,
        "width": 100,
        "height": 24
    }, {
        "type": "stn",
        "id": "site-104",
        "text": "104",
        "top": 226,
        "left": 159,
        "width": 75,
        "height": 24
    }]
}