function adjustLayout()
{
        var cHeight = xHeight("mitteinnen");
        var lHeight = xHeight("linksinnen");
        var rHeight = xHeight("rechtsinnen");

        var maxHeight = Math.max(cHeight, Math.max(lHeight,rHeight));

        xHeight("mitte", maxHeight);
        xHeight("links", maxHeight+6);
        xHeight("rechts", maxHeight);

        xShow("unten");
}

window.onload = function()
{
        xAddEventListener(window, "reszie", adjustLayout, false);
        adjustLayout();
}