// Werbebanner ein / ausblenden
function showHideLayerAdvert() {
  var i,p,v,obj,args=showHideLayerAdvert.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=findObjAdvert(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='block')?'block':(v=='none')?'none':v; }
    obj.display=v; }
}

function findObjAdvert(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObjAdvert(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

// Setzen eines Cookies ueber JavaScript
// Wird verwendet, damit Seitenlayer pro Session nur einmal ausgeliefert werden
function setCookieAdvert (name, value) {
	var argv = setCookieAdvert.arguments;
	var argc = setCookieAdvert.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;
	document.cookie = name + "=" + escape (value) +
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
	((path == null) ? "" : ("; path=" + path)) +
	((domain == null) ? "" : ("; domain=" + domain)) +
	((secure == true) ? "; secure" : "");
}

// Auslesen des Cookie-Wertes
function getCookieAdvert(Name) {
	var search = Name + "="
	var returnvalue = "";
	if (document.cookie.length > 0) {
	offset = document.cookie.indexOf(search)
	if (offset != -1) { // if cookie exists
		offset += search.length
		// set index of beginning of value
		end = document.cookie.indexOf(";", offset);
		// set index of end of cookie value
		if (end == -1)
			end = document.cookie.length;
			returnvalue=unescape(document.cookie.substring(offset, end))
		}
	}
	return returnvalue;
}