/*
i filtri per colore
*/

	var SelectedColors = { 'blu' : false, 'verde': false, 'rosso': false, 'giallo': false };
	
	function SetColorIcon(obj, col) {
	  var sel = obj.src.indexOf("_s.") != -1;
	  obj.src = sel ? '/icone/'+col+'.png' : '/icone/'+col+'_s.png';
	}
	
	function ColorSelected(obj, col) {
	  SetColorIcon(obj, col);
	  SelectedColors[col] = !SelectedColors[col];
	  var filter = new Array(), v;
	  for (v in SelectedColors)
	    if (SelectedColors[v])
	      filter.push(v);
	  if (filter.length) {
	      map_animations[map_name].setEpoqueFilter(map_maps[n], filter);
	      map_animations[map_name].centerShapes(map_maps[n]);
	  } else {
	      map_animations[map_name].clearEpoqueFilter(map_maps[n]);
	      map_animations[map_name].centerShapes(map_maps[n]);
	  }
	}