this.getRectTRBLWH = function(elt)
{
    var i, rect,
        coords =
        {
            "top": 0,
            "right": 0,
            "bottom": 0,
            "left": 0,
            "width": 0,
            "height": 0
        };

    if (elt)
    {
        rect = elt.getBoundingClientRect();

        coords =
        {
            "top": rect.top,
            "right": rect.right,
            "bottom": rect.bottom,
            "left": rect.left,
            "width": rect.right-rect.left,
            "height": rect.bottom-rect.top
        };
    }

    return coords;
};