var points = new Array();
var pointObjs = new Array();
function togglePoints() {  
  if (pointObjs.length == 0 ) { 
    for (var x=0; x<pointIds.length; x++) {
      pointObjs[pointIds[x]] = document.getElementById(pointIds[x]);
    }
  }
  var id = "";
  for (x=0; x<markers.length; x++) {
    id  = markers[x].getIcon().image.replace('/wp-content/plugins/ws-contactmaps/images/', '');
    if (pointObjs[id].checked) {
      markers[x].show();
    }
    else {
      markers[x].hide();
    }
  }
}