this.setForce = function(force)
      {
        var i; 
        
        for(i = 0; i < this.blobs.length; i++)
        {
          if(this.blobs[i] == null)
          {
            continue; 
          }
          if(this.blobs[i] == this.selectedBlob)
          {
            this.blobs[i].setForce(new Vector(0.0, 0.0)); 
            continue; 
          }
          this.blobs[i].setForce(force); 
        }
      }