fading ikon ve stromě

init = graph.nodes[this.parent_id].setParentFadeLevel(init,initNodeId,fade);      
}
return init;
}

  jQuery(canvas).mousemove(function(e) {
    var canvasPosition = jQuery(this).offset();
        var p = fromScreen({x: e.pageX - canvasPosition.left, y: e.pageY - canvasPosition.top});
        nearest = layout.nearest(p);

    if (nearest.node.visible)
      {
      var s = toScreen(nearest.point.p);
      var h = e.pageX-canvasPosition.left > s.x ? e.pageX-canvasPosition.left - s.x : s.x - e.pageX-canvasPosition.left;
      var v = e.pageY-canvasPosition.top > s.y ? e.pageY-canvasPosition.top - s.y : s.y - e.pageY-canvasPosition.top;
      var distance = Math.sqrt(h*h + v*v);              
      underMouseEvent = distance <= iconRadius ? true : false;
      }
    else
      underMouseEvent = false;
    
    if (underMouseEvent )
      highlighted = nearest;
      
        if (dragged !== null && dragged.node !== null) {
            dragged.point.p.x = p.x;
            dragged.point.p.y = p.y;
        }
    
        renderer.start();
    });

var s = toScreen(p);

if (node.data.label="Zábava")
   {
        console.log(s);
   }

      var left = document.body.scrollLeft || window.pageXOffset;
      var top = document.body.scrollTop || window.pageYOffset;
      
      var visibleArea = {
        left: left,
        right: screen.width + left,
        top: top,
        bottom: screen.height + top        
        }
      
      if ( (s.x<visibleArea.left || s.x>visibleArea.right) && 
           (s.y<visibleArea.top || s.y>visibleArea.bottom)
          )
          {
          // console.log(node.data.label + " is off screen: " + s.x + "," + s.y );
          return false;                                    
          }
          else
          {
          console.log(node.data.label + " is on screen: " + s.x + "," + s.y );          
          }

var paddingX = 6;
var paddingY = 6;
var contentWidth = node.getWidth();
var contentHeight = node.getHeight();
var boxWidth = contentWidth + paddingX;
var boxHeight = contentHeight + paddingY;
var left = document.body.scrollLeft || window.pageXOffset;
var top = document.body.scrollTop || window.pageYOffset;

var visibleArea = {
        left: left + (boxWidth/2),
        right: screen.width + left - (boxWidth/2),
        top: top + (boxHeight/2),
        bottom: screen.height + top - (boxHeight/2)        
        }
      
if ( (s.x<visibleArea.left || s.x>visibleArea.right) && 
           (s.y<visibleArea.top || s.y>visibleArea.bottom)
          )
          {
          console.log(node.data.label + " is off screen: " + s.x + "," + s.y );
          return false;                                    
          }

var paddingX = 6;
var paddingY = 6;
                  
      var contentWidth = node.getWidth();
            var contentHeight = node.getHeight();
            var boxWidth = contentWidth + paddingX;
            var boxHeight = contentHeight + paddingY;
      var text = addTextToImages ? 12 + (nodeFontStroke?2:0) : 0; // height of label
      var left = document.body.scrollLeft || window.pageXOffset;
      var top = document.body.scrollTop || window.pageYOffset;

      var bodyMargin = 8;
      var visibleArea = {
        left: left - bodyMargin - contentWidth/2,
        right: screen.width + bodyMargin + left + contentWidth/2,
        top: top - addTextToImages - bodyMargin - contentHeight/2,
        bottom: screen.height + bodyMargin + top + contentHeight/2        
        }
      
      if ( (  s.x<visibleArea.left  || 
           s.x > visibleArea.right 
              ) ||  
           ( s.y<visibleArea.top ||   
             s.y>visibleArea.bottom
             )
          )
          {
          // console.log(node.data.label + " is off screen: " + s.x + "," + s.y + " ");
          return false;                                    
          }          
          else
            {
            console.log(node.data.label + " is on screen: " + s.x + "," + s.y );
            }