function zeigmal(was1,was2,wie) {
 if(document.getElementById) {
     if (wie=="zeigen"){
	 		 document.getElementById('head_index').style.visibility = "hidden";
	     document.getElementById('p_index').style.visibility = "hidden";
			    
		 document.getElementById('head_zelt').style.visibility = "hidden";
	     document.getElementById('p_zelt').style.visibility = "hidden";
		 
		 document.getElementById('head_galerie').style.visibility = "hidden";
	     document.getElementById('p_galerie').style.visibility = "hidden";
		 
		 document.getElementById('head_special').style.visibility = "hidden";
	     document.getElementById('p_special').style.visibility = "hidden";
		 
		 document.getElementById('head_partner').style.visibility = "hidden";
	     document.getElementById('p_partner').style.visibility = "hidden";
		 
		 document.getElementById('head_kosten').style.visibility = "hidden";
	     document.getElementById('p_kosten').style.visibility = "hidden";
	     
		 document.getElementById('head_einlage').style.visibility = "hidden";
	     document.getElementById('p_einlage').style.visibility = "hidden"
		
		 document.getElementById('head_kontakt').style.visibility = "hidden";
	     document.getElementById('p_kontakt').style.visibility = "hidden"
		
		 document.getElementById('head_impress').style.visibility = "hidden";
	     document.getElementById('p_impress').style.visibility = "hidden"
		 
 		 		 		 
         document.getElementById(was1).style.visibility = "visible";		 	 		 		 		 		 		 		 		 		 		 		 		 
         document.getElementById(was2).style.visibility = "visible";
		 }
	 else
	     document.getElementById(was).style.visibility = "hidden";
   }
}