code: function (state) {
  		var series = this,
  			options = series.options,
  			graph = series.graph,
  			stateOptions = options.states,
  			lineWidth = options.lineWidth;
  
  		state = state || NORMAL_STATE;
  
  		if (series.state !== state) {
  			series.state = state;
  
  			if (stateOptions[state] && stateOptions[state].enabled === false) {
  				return;
  			}
  
  			if (state) {
  				lineWidth = stateOptions[state].lineWidth || lineWidth + 1;
  			}
  
  			if (graph && !graph.dashstyle) { // hover is turned off for dashed lines in VML
  				graph.attr({ // use attr because animate will cause any other animation on the graph to stop
  					'stroke-width': lineWidth
  				}, state ? 0 : 500);
  			}
  		}
  	}
docs: Set the state of the graph