var wikipedia = null;
					 function initWikipedia() {
						 wikipedia = new GLayer("org.wikipedia.de");
					   wikipedia.hide();
						 map227816.addOverlay(wikipedia);
					 }function switchWikipedia() {
							if (!wikipedia) {
								initWikipedia();
							}
							var icon = dojo.byId("wikipediaIcon");
							var tooltip = dojo.byId("wikipediaTooltip");
							if (wikipedia.isHidden()) {
								wikipedia.show();
								dojo.attr(icon,"src","/app/i/layerwikipedia_on.gif");
								dojo.attr(tooltip,"innerHTML","Wikipedia<br />- Aus -");
							} else {
								wikipedia.hide();
								dojo.attr(icon,"src","/app/i/layerwikipedia.gif");
								dojo.attr(tooltip,"innerHTML","Wikipedia<br />- An -");
							}
						}