function calcCirculos(pageX, pageY){
  //Obtener pos del menu
  var pos = $("#circulos-img").position();
  var finalX =  pos.left;
  var finalY =  pos.top;
  
  //Obtener pos del click
  var clickX = pageX - finalX;
  var clickY = pageY - finalY;
  
  //Radio y centros de los circulos
  var radio = 84;
  var point1x = 216;
  var point1y = 138;

  var point2x = 175;
  var point2y = 206

  var point3x = 257;
  var point3y = 207; 
  
  //vars of distance
  var dx = (point1x - clickX);
  var dy = (point1y - clickY);
  var d1 = Math.round(Math.sqrt( dx*dx + dy*dy ));
  
  dx = (point2x - clickX);
  dy = (point2y - clickY);
  var d2 = Math.round(Math.sqrt( dx*dx + dy*dy ));
  
  dx = (point3x - clickX);
  dy = (point3y - clickY);
  var d3 = Math.round(Math.sqrt( dx*dx + dy*dy ));
  
  //get least distance
  var dindex;
  var dl;
  
 
  
  if (d1 < d2 && d1 < d3) {
    dindex = 1;
    dl = d1;
  }
  if (d2 < d1 && d2 < d3) {
    dindex = 2;
    dl = d2;
  }
  if (d3 < d1 && d3 < d2) {
    dindex = 3;
    dl = d3;
  }
   
  //Conocer el lado sobre el que esta
  if(dl > radio) {
    dindex = 0;
  }
  
  $("#circulos-img").attr("class", "circulos circulos-" + dindex);
  
  
  
}