var aktiv = 'systematic-panel'

var path = '/opencms/system/modules/de.phase6.template/resources/images/';

bild0 = new Image();
bild0.src = path + 'systematicBackground.jpg';

bild1 = new Image();
bild1.src = path + 'systematicBackgroundSet.jpg';


bilder=new Array();
bilder[0]=bild0.src;
bilder[1]=bild1.src;

var myFunction = function(a,b){
 
// ausblenden
	var act1 = $(aktiv);
	act1.fade(0);
	var div1 = act1.setStyles({
		display:'none',
		opacity: 0
	});


eval('document.getElementById(\'content-back\').style.backgroundImage="url('+bilder[b]+')";');

// einblenden
	var act2 = $(a);
	var div2 = act2.setStyles({
		display:'block',
		opacity: 0
	});

	act2.fade(1);

aktiv = a;

};