function getHeight() {

var menuWrapper = window.document.getElementById("menuWrapper").offsetHeight;
var areaMenuLeft = window.document.getElementById("areaMenuLeft").offsetHeight;
var mainContentImage = window.document.getElementById("mainContentImage").offsetHeight;
var mainContentLeft = 0;
var mainContentRight = 0;
var mainContentLeftBody = 0;
var mainContentRightBody = 0;
var marginalContent = window.document.getElementById("marginalContent").offsetHeight;
var marginalContentArea = window.document.getElementById("marginalContentArea").offsetHeight;

if ((mainContentLeft = window.document.getElementById("mainContentLeft"))
    && (mainContentRight = window.document.getElementById("mainContentRight"))) {
var mainContentLeft = window.document.getElementById("mainContentLeft").offsetHeight;
var mainContentRight = window.document.getElementById("mainContentRight").offsetHeight;
var mainContentLeftBody = window.document.getElementById("mainContentLeftBody").offsetHeight;
var mainContentRightBody = window.document.getElementById("mainContentRightBody").offsetHeight;
}

heightCollection = new Array(5); //fuenf Hoehen werden in das Array geschrieben
  heightCollection[0] = menuWrapper;
  heightCollection[1] = mainContentLeftBody + mainContentImage;
  heightCollection[2] = mainContentRightBody + mainContentImage;
  heightCollection[3] = marginalContent;
  heightCollection[4] = 470; //Mindesthoehe

heightCollection.sort(function(a,b){return b - a}); //Array wird absteigend sortiert, der hoechste Wert ist dann der erste Eintrag

var heightMax = heightCollection[0]; //der erste Eintrag wird in eine Variabele geschrieben

if  (navigator.appName == "Microsoft Internet Explorer") {
	menuWrapperDiff = heightMax - areaMenuLeft - 10;
	effectivHeightMarginal = heightMax;
	effectivHeight = heightMax - mainContentImage;
}

else {
	menuWrapperDiff = heightMax - areaMenuLeft - 11;
	effectivHeightMarginal = heightMax -1;
	effectivHeight = heightMax - mainContentImage -1;
}

window.document.getElementById("marginalContentArea").style.height = effectivHeightMarginal + "px";
window.document.getElementById("area_1").style.height = menuWrapperDiff + "px";

var mainContentLeft, mainContentRight;
if ((mainContentLeft = window.document.getElementById("mainContentLeft"))
    && (mainContentRight = window.document.getElementById("mainContentRight"))) {
  mainContentLeft.style.height = effectivHeight + "px";
  mainContentRight.style.height = effectivHeight + "px";
}


}