<!DOCTYPE html>
<html>
<body style="font-family: ahem; -webkit-font-smoothing: none;">
<style>
    div.table { display: table; }
    div.section { display: table-row-group; }
    div.caption { display: table-caption; }
    div.colgroup { display: table-column-group; }
    div.col { display: table-column; }
    div.cell { display: table-cell; width: 50px; height: 50px; background-color: blue; }
    div.row { display: table-row; }
    div.block { width: 50px; height: 50px; background-color: blue; }
</style>

<div class="table" id="table-1">
    <div class="cell"></div>
    <div class="section" id="tbody-1">
    </div>
</div>

<div class="table" id="table-2">
    <div class="cell"></div>
    <div class="row" id="row"></div>
</div>

<div class="table" id="table-3">
    <div class="cell"></div>
    <div class="caption" id="caption">
    </div>
</div>

<div class="table" id="table-4">
    <div class="cell"></div>
    <div class="colgroup" id="colgroup">
    </div>
</div>

<div class="table" id="table-5">
    <div class="cell"></div>
    <div class="section" id="tbody-5">
    </div>
</div>

<div class="table" id="table-6">
    <div class="cell"></div>
    <div class="col" id="col-6">
    </div>
</div>

<div class="table" id="table-7">
    <div class="cell"></div>
    <div id="block">
    </div>
</div>

<div class="table" id="table-8">
    <div class="block"></div>
    <div class="cell" id="cell"></div>
</div>

<script>
    function createCell()
    {
        var cell = document.createElement("div");
        cell.className = "cell";
        return cell;
    }

    function insertCell(tableID, beforeID)
    {
        var table = document.getElementById(tableID);
        var before = document.getElementById(beforeID);
        table.insertBefore(createCell(), before);
    }

    function createRow()
    {
        var row = document.createElement("div");
        row.className = "row";
        return row;
    }

    function insertRow(tableID, beforeID)
    {
        var table = document.getElementById(tableID);
        var before = document.getElementById(beforeID);
        table.insertBefore(createRow(), before);
    }

    function createBlock()
    {
        var block = document.createElement("div");
        block.className = "block";
        return block;
    }

    function insertBlock(tableID, beforeID)
    {
        var table = document.getElementById(tableID);
        var before = document.getElementById(beforeID);
        table.insertBefore(createBlock(), before);
    }

    document.body.offsetTop;

    insertCell("table-1", "tbody-1");
    insertCell("table-2", "row");
    insertCell("table-3", "caption");
    insertCell("table-4", "colgroup");
    insertRow("table-5", "tbody-5");
    insertCell("table-6", "col-6");
    insertCell("table-7", "block");
    insertBlock("table-8", "cell");
</script>
</body>
</html>