function show_projects(n)	{
     var idecka = new Array(1,2,3);
     if(document.getElementById('project_' + n).className=="nope") {
	    document.getElementById('project_' + n).className="active";
	    document.getElementById('prize_' + n).style.display="block";
	    document.getElementById('pic_' + n).style.display="block";
	    for (i=1;i<=idecka.length;i++) {
	     if(n != i) {
	      document.getElementById('project_' + i).className="nope";
	      document.getElementById('prize_' + i).style.display="none";
	      document.getElementById('pic_' + i).style.display="none";
	     }
	    }
     }
    }
    
    function change_picture(n) {
     var idecka = new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50);
     if(document.getElementById('pic_' + n).style.display=="none") {
	    document.getElementById('pic_' + n).style.display="block";
	    for (i=0;i<=idecka.length;i++) {
	     if(n != i) {
	      document.getElementById('pic_' + i).style.display="none";
	     }
	    }
     }
    }
    
    function show_menu(n)	{
     var idecka = new Array(1);
     if(document.getElementById('menu_' + n).style.display=="none") {
	    document.getElementById('menu_' + n).style.display="block";
	   }
     else {
      document.getElementById('menu_' + n).style.display="none";
     }
    }