window.onload = init;
function init() {

    linksHeight = document.getElementById("links").offsetHeight;
    contentHeight = document.getElementById("inhalt").offsetHeight;
    rechtsHeight = document.getElementById("rechts").offsetHeight;
	
	if(contentHeight < linksHeight && rechtsHeight < linksHeight) {
       document.getElementById("main").style["height"] = linksHeight+0+"px";
    }
		
    if(contentHeight < rechtsHeight && linksHeight < rechtsHeight) {
       document.getElementById("main").style["height"] = rechtsHeight+0+"px";
    }
	
	if(rechtsHeight < contentHeight && linksHeight < contentHeight) {
       document.getElementById("main").style["height"] = contentHeight+0+"px";
    }
	
	
	
	mainHeight = document.getElementById("main").offsetHeight;
	
	if(linksHeight < mainHeight) {
       document.getElementById("links").style["height"] = mainHeight+0+"px";
    }
	
	if(rechtsHeight < mainHeight) {
       document.getElementById("rechts").style["height"] = mainHeight+0+"px";
    }
	
	if(contentHeight < mainHeight) {
       document.getElementById("inhalt").style["height"] = mainHeight+0+"px";
    }
	
	

}