diff --git a/index.html b/index.html
index ea33a0a..2dd00a6 100644
--- a/index.html
+++ b/index.html
@@ -239,41 +239,29 @@
             "minPeriod": "mm",
             "labelRotation": 25,
 	    guides: [{
-	    	date: "2017-1-8", toDate: "2017-1-9",
-	    	fillAlpha: 0.1, fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
-	    },{
-	    	date: "2017-1-7", toDate: "2017-1-8",
-	    	fillAlpha: 0.1, fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
-	    },{
-	    	date: "2017-1-1", toDate: "2017-1-2",
-	    	fillAlpha: 0.1, fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
-	    },{
-	    	date: "2016-12-31 0:0", toDate: "2017-1-1 0:0",
-	    	fillAlpha: 0.1, fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
-	    },{
 	    	date: "2016-12-24 0:0", toDate: "2016-12-25 0:0",
-	    	fillAlpha: 0.1, fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
 	    },{
 	    	date: "2016-12-25 0:0", toDate: "2016-12-26 0:0",
-	    	fillAlpha: 0.1, fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
 	    },{
 	    	date: "2016-12-17 0:0", toDate: "2016-12-18 0:0",
-	    	fillAlpha: 0.1, fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
 	    },{
 	    	date: "2016-12-18 0:0", toDate: "2016-12-19 0:0",
-	    	fillAlpha: 0.1, fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
 	    },{
 	    	date: "2016-12-10 0:0", toDate: "2016-12-11 0:0",
-	    	fillAlpha: 0.1, fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
 	    },{
 	    	date: "2016-12-11 0:0", toDate: "2016-12-12 0:0",
-	    	fillAlpha: 0.1, fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
 	    },{
 	    	date: "2016-12-03 0:0", toDate: "2016-12-04 0:0",
-	    	fillAlpha: 0.1, fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#8080f0", fillAlpha: 0.1, lineAlpha: 0
 	    },{
 	    	date: "2016-12-04 0:0", toDate: "2016-12-05 0:0",
-	    	fillAlpha: 0.1, fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
+	    	 fillColor: "#f08080", fillAlpha: 0.1, lineAlpha: 0
 	    }],
         },
         "mouseWheelZoomEnabled": true,
@@ -367,6 +355,7 @@
         var w = 14, unit=18;
         var path = document.createElementNS("http://www.w3.org/2000/svg", "path");
 
+        cht.locktoggle = true;
         path.setAttribute("stroke", color);
         path.setAttribute("stroke-width", 4);
         path.setAttribute("fill", "white");
@@ -378,9 +367,18 @@
 
         svg = document.getElementById(idgroup);
         svg.appendChild(path);
-
-        path.addEventListener("mouseenter", function(){emphasize(cht, from,  to);path.setAttribute("stroke-width", 10);});
-        path.addEventListener("mouseleave", function(){emphasize(cht, from, -to);path.setAttribute("stroke-width", 4);});
+        path.addEventListener("mouseenter", function(){if(cht.locktoggle){
+                                     emphasize(cht, from,  to);path.setAttribute("stroke-width", 10);}});
+        path.addEventListener("mouseleave", function(){if(cht.locktoggle){
+                                     emphasize(cht, from, -to);path.setAttribute("stroke-width", 4);}});
+        path.addEventListener("click", function(){
+                                     if (cht.locktoggle) {
+                                         path.setAttribute("stroke-width", 14);
+                                         cht.locktoggle = false;
+                                     } else {
+                                         path.setAttribute("stroke-width", 10);
+                                         cht.locktoggle = true;
+                                     }});
     }
 
     makeGroup(tempchart, "tempgroup", 0, 2, "blue");