var img = new Array();
			img[1] = new Image(); 
			img[1].src = "images/"+image_root_path+"/02_main_navi/navitop_01_over.jpg";
			img[2] = new Image(); 
			img[2].src = "images/"+image_root_path+"/02_main_navi/navitop_02_over.jpg";
			img[3] = new Image(); 
			img[3].src = "images/"+image_root_path+"/02_main_navi/navitop_03_over.jpg";
			img[4] = new Image(); 
			img[4].src = "images/"+image_root_path+"/02_main_navi/navitop_01_out.jpg";
			img[5] = new Image(); 
			img[5].src = "images/"+image_root_path+"/02_main_navi/navitop_02_out.jpg";
			img[6] = new Image(); 
			img[6].src = "images/"+image_root_path+"/02_main_navi/navitop_03_out.jpg";
			
			
			function Bildwechsel(bild,richtung,nr){
			document.getElementById(bild).style.backgroundImage = "url(images/"+image_root_path+"/02_main_navi/navitop_"+nr+"_"+richtung+".jpg)";
			}