whole_func_string: function(opt_options) {
      this.canvas_ = document.createElement("canvas");
      opt_options = opt_options || {};
      this.direction_ = opt_options.direction || null;
    }
func_code_string: function(opt_options) {
      this.canvas_ = document.createElement("canvas");
      opt_options = opt_options || {};
      this.direction_ = opt_options.direction || null;
    }
func_documentation_string: Creates the crosshair
  
  @constructor