var bgColorMenu1 = "#B7BBBD";
var bgColorMenu2 = "#FFA300";

normal1=new Image();normal1.src="images/kontakt_up.gif";hover1=new Image();hover1.src="images/kontakt_dn.gif";
normal2=new Image();normal2.src="images/sitem_up.gif";hover2=new Image();hover2.src="images/sitem_dn.gif";
normal3=new Image();normal3.src="images/impress_up.gif";hover3=new Image();hover3.src="images/impress_dn.gif";
normal4=new Image();normal4.src="images/anfahrt_up.gif";hover4=new Image();hover4.src="images/anfahrt_dn.gif";
normal5=new Image();normal5.src="images/login_up.gif";hover5=new Image();hover5.src="images/login_dn.gif";


function changeColor(box,tf)
{
	var TDID, COLtrue=bgColorMenu2, COLfalse=bgColorMenu1;
	TDID=box;

	if (document.all && !document.getElementById) // IE 4
	{
		if (tf=="true")
			document.all[TDID].style.backgroundColor=COLtrue;
		else
			document.all[TDID].style.backgroundColor=COLfalse;
	}
	
	if (document.getElementById) // IE 5.x und NN 6 (Opera, theoretisch ;-)
	{
		if (tf=="true")
			document.getElementById(TDID).style.backgroundColor=COLtrue;
		else
			document.getElementById(TDID).style.backgroundColor=COLfalse;
	}
	
	if (document.layers) // NN 4.x
	{
		if (tf=="true")
			document.layers[TDID].bgColor=COLtrue;
		else
			document.layers[TDID].bgColor=COLfalse;
	}
}

function Mausover(BildNr, hover) {
	window.document.images[BildNr].src = hover.src;
}
function Mauswech(BildNr, normal) {
	window.document.images[BildNr].src = normal.src;
}

function on(message) {
	window.status = message;
	window.defaultStatus = window.status;
}
function off() {
	window.status = "tgz chemie";
	window.defaultStatus = window.status;
}