function neuAufbau(){
	var xh=55;
	var xnw=18.8;
	var xgm=1;
	var fsmin= 8;
	var nhg=100;
	var nvg=100;
	var n=document.getElementById("nav");
	var c=document.getElementById("content");
	var mw	= window.innerWidth || (window.document.documentElement.clientWidth || window.document.body.clientWidth);
	var mh	= window.innerHeight || (window.document.documentElement.clientHeight || window.document.body.clientHeight);
	if(mh<1) return;
	if(mw<1) return;
	var hb=mh/mw;
	var fs=Math.floor( hb*mw/xh);
	if(fs<fsmin) fs=fsmin;
	var ahg;
	ahg =Math.floor(mh/( hb*nhg));	
	if(ahg<1) ahg=1;
	var avg;
	avg=Math.floor(mw/nvg);
	if(avg<1) avg=1;
	var gm=fs*xgm;
	var nw=fs*xnw;
	var nh=mh-2*gm;
	if(nh<1)nh=1;
	var cw=mw-(nw+3*gm);
	if(cw<1) cw=1;
	var ns=n.style;
	var cs=c.style;
	with(cs){
		top=gm+"px";
		left=2*gm+nw+"px";
		fontSize=fs+"px";
		height=nh+"px";
		width=cw+"px";
	} 
	with(ns){
		top=gm+"px";
		left=gm+"px";
		width=nw+"px";
		height=nh+"px";
		fontSize=fs+"px";
	}
}
window.addEventListener?window.addEventListener('load',neuAufbau,false):window.attachEvent('onload',neuAufbau);
window.addEventListener?window.addEventListener('resize',neuAufbau,false):window.attachEvent('onresize',neuAufbau);