function addDensityInfo()
{
    var tbl = document.getElementById("product-attribute-specs-table");
    if (!tbl)
        return;
    var rows = tbl.rows;
    for (var i = 0; i < rows.length; i++)
    {
        var row = rows[i];
        var cells = row.cells;
        if (cells[0].innerHTML.indexOf("Densitet") > -1)
        {
            cells[1].innerHTML += " &nbsp; <a href='javascript:showDensityInfo();'>[?]</a>";
            return;
        }
    }
}

function showDensityInfo()
{
    var myRef = window.open('/densitet', 'Densitet',
'left=20,top=20,width=500,height=500,toolbar=0,location=0,directories=0,status=0,menubar=0,resizable=1');
}

var old = window.onload;
window.onload = function()
{
    if (old)
        old();
    addDensityInfo();
}