function adjustLayout()
{
// ermittle hoehe
var HeightSpalte1 =  xHeight("conLeft");
var HeightSpalte2 =  xHeight("conMitte");

var maxHeight = Math.max(HeightSpalte1, HeightSpalte2);

// alert (maxHeight);

xHeight("conLeft", maxHeight);
xHeight("conMitte", maxHeight);
}

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