function ChangeZindex(LayerName1, ZiWert, LayerName2)
{
		if(document.layers)
		{
			if(LayerName2)
			{
				document.layers[LayerName1].document.layers[LayerName2].zIndex=ZiWert;
			}
			else
			{
				document.layers[LayerName1].zIndex=ZiWert;
			}
		}
		if(document.getElementById)	{document.getElementById(LayerName1).style.zIndex=ZiWert;}
		if(document.all)						{document.all[LayerName1].style.zIndex=ZiWert;}
		return;
}