newwindow=false;
function fenster(url,breite,hoehe)
{
if(newwindow&&newwindow.closed==false)
newwindow.close()
var l = (screen.availWidth - breite) / 2;
var t = (screen.availHeight - hoehe) / 2;
newwindow = window.open(url,"newwindow","width="+breite+",height=" +hoehe+",left="+l+",top="+t+",scrollbars=1,resizable=0;");
newwindow.focus();
}

function alterCate(elm, onoff)
{
	if (typeof(onoff) == "undefined" )
	{
		onoff = "blur";
	}

	if (!elm.base)
	{
		elm.base = elm.value;
	}

	if (elm.value == elm.base && onoff != "blur")
	{
		elm.value = "";
	}
	else if (elm.value == "" && onoff == "blur")
	{
		elm.value = elm.base;
	}
}

var theTarget = "_top";

function goThere(){
if(!document.theForm.theMenu.selectedIndex==""){
window.open(document.theForm.theMenu.options[document.theForm.theMenu.selectedIndex].value,theTarget,"");}}