if (document.getElementById) { window.onload = swap };

function swap() {
var numimages=4;
rndimg = new Array("bild4.jpg", "bild8.jpg", "bild5.jpg", "bild7.jpg"); 
x=(Math.floor(Math.random()*numimages));
randomimage=(rndimg[x]);
document.getElementById("Sprache").style.backgroundImage = "url("+ randomimage +")"; 
}




oldTextAry = new Array();

function changeText (fieldObj, newTexStr) {
if (newTexStr == fieldObj.innerHTML) {
fieldObj.innerHTML = oldTextAry[fieldObj.id];
} else {
oldTextAry[fieldObj.id] = fieldObj.innerHTML;
fieldObj.innerHTML = newTexStr;
}
}


function showElement(layer){
var myLayer = document.getElementById(layer);
if(myLayer.style.display=="none"){
myLayer.style.display="block";
myLayer.backgroundPosition="top";
} else {myLayer.style.display="none";}
}