function doAnimieren(elementid,xstart,newxstart,xende,speed)	{
	var elem = document.getElementById(elementid);

	var newxstart = newxstart + speed;
	
	// alert(elementid+','+newxstart+','+xende);
	
	elem.style.left = newxstart + 'px';
	
	if (newxstart < xende)
    {
	setTimeout("doAnimieren('" + elementid + "'," + xstart + "," + newxstart + "," + xende + "," + speed + ");",100);
	}
	else
	{
	elem.style.visibility='hidden';
	setTimeout("document.getElementById('" + elementid + "').style.visibility='visible';",10000);
	setTimeout("doAnimieren('" + elementid + "'," + xstart + "," + xstart + "," + xende + "," + speed + ");",10000);
	}
	
}

function doZuruckAnimieren(elementid,xstart,newxstart,xende,speed)	{
	var elem = document.getElementById(elementid);

	var newxstart = newxstart - speed;
	
	// alert(elementid+','+newxstart+','+xende);
	
	elem.style.left = newxstart + 'px';
	
	if (newxstart > xende)
    {
	setTimeout("doZuruckAnimieren('" + elementid + "'," + xstart + "," + newxstart + "," + xende + "," + speed + ");",100);
	}
	else
	{
	elem.style.visibility='hidden';
	setTimeout("document.getElementById('" + elementid + "').style.visibility='visible';",10000);
	setTimeout("doZuruckAnimieren('" + elementid + "'," + xstart + "," + xstart + "," + xende + "," + speed + ");",10000);
	}
	
}