function newImage(arg) {
if (document.images) {
rslt = new Image();
rslt.src = arg;
return rslt;
}
}
function changeImages(was,neu) {
	document.getElementById(was).src=neu;		      
}
var preloadFlag = false;
function preloadImages() {
if (document.images) {
b1_over = newImage("layoutimg/b1-over.gif");
b2_over = newImage("layoutimg/b2-over.gif");
b3_over = newImage("layoutimg/b3-over.gif");
b4_over = newImage("layoutimg/b4-over.gif");
b5_over = newImage("layoutimg/b5-over.gif");
b6_over = newImage("layoutimg/b6-over.gif");
preloadFlag = true;
}
} 

function ein(was,bild){
	document.getElementById('u'+was).style.display='block';
	if(bild==0) changeImages(was, 'layoutimg/'+was+'-over.gif'); 
	return true;
}

function aus(was,bild){
	document.getElementById('u'+was).style.display='none';
	if(bild==0) changeImages(was, 'layoutimg/'+was+'.gif'); 
	return true;
}
function SendEMail(){
	var sRef = "mailto:?subject=Interessante%20Seite&body=" + location.href;
	location.href = sRef;
}