function show_apartmans(n) {
           var idecka = new Array(1);
           if(document.getElementById('apart_' + n).style.display=="none") {
	          document.getElementById('apart_' + n).style.display="block";
	         }
           else {
            document.getElementById('apart_' + n).style.display="none";
           }
          }
          
          function change_picture(n) {
           var idecka = new Array(1,2,3,4,5,6,7,8,9);
           if(document.getElementById('pic_' + n).style.display=="none") {
	          document.getElementById('pic_' + n).style.display="block";
	          for (i=1;i<=idecka.length;i++) {
	           if(n != i) {
	            document.getElementById('pic_' + i).style.display="none";
	           }
	          }
           }
          }