function test () {
         alert("Test erfolgreich");
}

function getWindowWidth () {
  if (window.innerWidth) {
    return window.innerWidth;
  } else if (document.body && document.body.offsetWidth) {
    return document.body.offsetWidth;
  } else {
    return 1000;
  }
}

function refresh () {
    location.href = location.href;
}

function newWindowSize () {
  var windowWidth=getWindowWidth();
  if (windowWidth<1000){
    var contentWidth=windowWidth-280;
    document.getElementById("menu").style.left="0";
    document.getElementById("menu").style.marginLeft="0";
    document.getElementById("content").style.left="240px";
    document.getElementById("content").style.marginLeft="0";
    document.getElementById("content").style.width=contentWidth+"px";
    document.getElementById("rightBorder").style.left=(contentWidth+240)+"px";
    document.getElementById("rightBorder").style.marginLeft="0";
    document.getElementById("topBorderLeft").style.left="0";
    document.getElementById("topBorderLeft").style.marginLeft="0";
    document.getElementById("topBorderMiddle").style.left="220px";
    document.getElementById("topBorderMiddle").style.marginLeft="0";
    document.getElementById("topBorderMiddle").style.width=(contentWidth+20)+"px";
    document.getElementById("topBorderRight").style.left=(contentWidth+240)+"px";
    document.getElementById("topBorderRight").style.marginLeft="0";
    document.getElementById("bottomBorderLeft").style.left="0";
    document.getElementById("bottomBorderLeft").style.marginLeft="0";
    document.getElementById("bottomBorderMiddle").style.left="220px";
    document.getElementById("bottomBorderMiddle").style.marginLeft="0";
    document.getElementById("bottomBorderMiddle").style.width=(contentWidth+20)+"px";
    document.getElementById("bottomBorderRight").style.left=(contentWidth+240)+"px";
    document.getElementById("bottomBorderRight").style.marginLeft="0";
  } else {
    document.getElementById("menu").style.left="50%";
    document.getElementById("menu").style.marginLeft="-500px";
    document.getElementById("content").style.left="50%";
    document.getElementById("content").style.marginLeft="-260px";
    document.getElementById("content").style.width="700px";
    document.getElementById("rightBorder").style.left="50%";
    document.getElementById("rightBorder").style.marginLeft="460px";
    document.getElementById("topBorderLeft").style.left="50%";
    document.getElementById("topBorderLeft").style.marginLeft="-500px";
    document.getElementById("topBorderMiddle").style.left="50%";
    document.getElementById("topBorderMiddle").style.marginLeft="-280px";
    document.getElementById("topBorderMiddle").style.width="740px";
    document.getElementById("topBorderRight").style.left="50%";
    document.getElementById("topBorderRight").style.marginLeft="460px";
    document.getElementById("bottomBorderLeft").style.left="50%";
    document.getElementById("bottomBorderLeft").style.marginLeft="-500px";
    document.getElementById("bottomBorderMiddle").style.left="50%";
    document.getElementById("bottomBorderMiddle").style.marginLeft="-280px";
    document.getElementById("bottomBorderMiddle").style.width="740px";
    document.getElementById("bottomBorderRight").style.left="50%";
    document.getElementById("bottomBorderRight").style.marginLeft="460px";
  }
}

window.onresize = newWindowSize;