diff --git a/modoboa/extensions/stats/static/stats/css/stats.css b/modoboa/extensions/stats/static/stats/css/stats.css
index 4b242b68b..b0565e636 100644
--- a/modoboa/extensions/stats/static/stats/css/stats.css
+++ b/modoboa/extensions/stats/static/stats/css/stats.css
@@ -16,6 +16,13 @@
     color: #404040;
 }*/
 
+#tooltip {
+    position: absolute;
+    z-index: 20;
+    top: 60px;
+    display: none;
+}
+
 .grid .tick {
     stroke: lightgrey;
     opacity: 0.7;
@@ -24,6 +31,13 @@
     stroke-width: 0;
 }
 
+.line_over { 
+    stroke: gray;
+    stroke-width: 1.5px;
+    stroke-dasharray: 5, 5;
+    display: none;
+}
+
 .axis path,
 .axis line {
     fill: none;
@@ -42,34 +56,23 @@
 }
 
 .legend rect {
-  fill: white;
+  fill: none;
   stroke: black;
-  opacity: 0.8;
+  opacity: 0;
 }
 
-.d3-tip {
-  line-height: 1;
-  font-weight: bold;
-  padding: 12px;
-  background: rgba(0, 0, 0, 0.8);
+.tip {
+  font-size: 0.9em;
+  padding: 5px;
+  background: rgba(0, 0, 0, 0.6);
   color: #fff;
-  border-radius: 2px;
+  border-radius: 5px;
 }
 
-.d3-tip:after {
-  box-sizing: border-box;
-  display: inline;
-  font-size: 10px;
-  width: 100%;
-  line-height: 1;
-  color: rgba(0, 0, 0, 0.8);
-  content: "\25BC";
-  position: absolute;
-  text-align: center;
+.tip p { 
+    margin: 0;
 }
 
-.d3-tip.n:after {
-  margin: -1px 0 0 0;
-  top: 100%;
-  left: 0;
+.tracker { 
+    display: none;
 }
\ No newline at end of file
diff --git a/modoboa/extensions/stats/static/stats/js/d3.legend.js b/modoboa/extensions/stats/static/stats/js/d3.legend.js
index 7fb5b8a3e..52b267a6c 100644
--- a/modoboa/extensions/stats/static/stats/js/d3.legend.js
+++ b/modoboa/extensions/stats/static/stats/js/d3.legend.js
@@ -42,13 +42,20 @@
                 .call(function(d) { d.exit().remove(); })
                 .attr("cy", function(d, i) { return i - 0.25 + "em"; })
                 .attr("cx", 0)
-                .attr("r", "0.4em")
+                .attr("r", "4px")
+                .style("stroke", function(d) { return d.value.color; })
+                .style("stroke-width", "1px")
+                .style("stroke-opacity", 0.8)
                 .style("fill", function(d) { return d.value.color; })
                 .on("click", function(d) {
-                    var curve = d3.select("[data-legend='" + d.key + "']");
-                    var state = (curve.style("display") == "none") ? "block" : "none";
+                    var curve = d3.selectAll("[data-legend='" + d.key + "']");
+                    var state = (curve.style("display") == "none") 
+                        ? "block" : "none";
 
                     curve.style("display", state);
+                    d3.select(this).style(
+                        "fill", (state == "none") ? "none" : d.value.color
+                    );
                 });
     
             // Reposition and resize the box
diff --git a/modoboa/extensions/stats/static/stats/js/graphicset.js b/modoboa/extensions/stats/static/stats/js/graphicset.js
index 75ad41601..cdfcb8e0a 100644
--- a/modoboa/extensions/stats/static/stats/js/graphicset.js
+++ b/modoboa/extensions/stats/static/stats/js/graphicset.js
@@ -61,11 +61,13 @@ Graphic.prototype = {
             xAxis2 = d3.svg.axis().scale(x2).orient("bottom");
         var y = d3.scale.linear().range([this.options.height, 0]),
             y2 = d3.scale.linear().range([this.options.preview_height, 0]);
+        var bisectDate = d3.bisector(function(d) { return d.x * 1000; }).left;
 
-        
         var brush = d3.svg.brush()
             .x(x2)
             .on("brush", brushed);
+
+        var points = [];
         
         x.domain(d3.extent(this.data[0].data.map(function(d) { return d.x * 1000; })));
         y.domain([
@@ -91,6 +93,9 @@ Graphic.prototype = {
 
         var focus = svg.append("g")
             .attr("class", "focus")
+            .attr("width", width - 2 * this.options.margin.left)
+            .attr("height", this.options.height)
+            .attr("pointer-events", "all")
             .attr("transform",
                   "translate(" + this.options.margin.left + ",0)");// + this.options.margin.top * 2 + ")");
 
@@ -111,14 +116,41 @@ Graphic.prototype = {
             .enter().append("g")
             .attr("class", "curve");
 
-        curve.append("path")
+        var line = focus.append("line")
+            .attr("class", "line_over")
+            .attr("x1", 0)
+            .attr("y1", 0)
+            .attr("x2", 0)
+            .attr("y2", 300);
+
+        var rect = focus.append("rect")
+            .attr("fill", "none")
+            .attr("width", width - 2 * this.options.margin.left)
+            .attr("height", this.options.height);
+
+        var tooltip = d3.select(".chart")
+            .append("div")
+            .attr("id", "tooltip")
+            .attr("class", "remove")
+            .attr("class", "tip");
+
+        var path = curve.append("path")
             .attr("class", "area")
-            .attr("d", function(d) { 
+            .attr("d", function(d, i) {
+                var path = this;
+
+                points[path] = {};
+                d.data.forEach(function(d) {
+                    points[path][d.x] = d.y;
+                });
+                focus.append("circle")
+                    .attr("class", "tracker tracker-" + i)
+                    .attr("r", 4);
                 return area(d.data);
             })
             .attr("data-legend", function(d) { return d.name; })
             .attr("stroke", function(d) { return d.color; })
-            .attr("stroke-width", "3px")
+            .attr("stroke-width", "2px")
             .attr("stroke-opacity", 0.8)
             .style("fill", function(d) { return d.color; });
 
@@ -157,35 +189,67 @@ Graphic.prototype = {
             .attr("class", "y axis")
             .call(yAxis);
 
-        var tooltip = d3.select(".chart")
-            .append("div")
-            .attr("class", "remove")
-            .style("position", "absolute")
-            .style("z-index", "20")
-            .style("display", "none")
-            .style("top", "0px")
-            .style("right", "10px");
-
-        var datearray = [];
-
-        focus.selectAll(".area")
+        var data = this.data;
+        rect
+            .on("mouseover", function(d) {
+                line.style("display", "block");
+                tooltip.style("display", "block");
+                data.forEach(function(d, cid) {
+                    var display = d3.selectAll("[data-legend='" + d.name + "']")
+                        .style("display");
+                    if (display == "none") {
+                        return;
+                    }
+                    focus.select(".tracker-" + cid).style("display", "block");    
+                });
+            })
             .on("mousemove", function(d) {
-                var mousex = d3.mouse(this)[0];
+                var mousex = d3.mouse(this)[0],
+                    mousey = d3.mouse(this)[1];
                 var date = x.invert(mousex);
+                var element = document.getElementById("tooltip");
+                var text = "";
 
-                for (var k = 0; k < d.data.length; k++) {
-                    datearray[k] = x.invert(d.data[k].x).value;
+                line.attr("x1", mousex)
+                    .attr("x2", mousex);
+
+                data.forEach(function(d, cid) {
+                    var display = d3.selectAll("[data-legend='" + d.name + "']")
+                        .style("display");
+                    if (display == "none") {
+                        return;
+                    }
+                    var i = bisectDate(d.data, date.getTime(), 1),
+                        d0 = d.data[i - 1],
+                        d1 = d.data[i],
+                        point = date.getTime() - (d0.x * 1000) > (d1.x * 1000) - date.getTime() ? d1 : d0;
+                    text += "<p>" + d.name + ": " + point.y.toFixed(3) + "</p>";
+
+                    var tracker_x = x(point.x * 1000),
+                        tracker_y = y(point.y);
+
+                    focus.selectAll(".tracker-" + cid)
+                        .style("fill", d.color)
+                        .attr("cx", tracker_x)
+                        .attr("cy", tracker_y);
+                });
+                if (mousex + element.clientWidth >= width - 2 * 40) {
+                    tooltip
+                        .style("left", (mousex - (element.clientWidth - 30)) + "px");
+                } else {
+                    tooltip.style("left", (mousex + 50) + "px");
                 }
-                var mousedate = datearray.indexOf(date.value);
-                var pro = d.data[mousedate].y;
-
-                tooltip.html( "<p>" + date + "<br>" + pro + "</p>" )
-                        .style("display", "block");
+                tooltip.html("<p>" + date + "</p>" + text);
+            })
+            .on("mouseout", function(d) {
+                tooltip.style("display", "none");
+                line.style("display", "none");
+                focus.selectAll(".tracker").style("display", "none");
             });
 
         var legend = focus.append("g")
             .attr("class", "legend")
-            .attr("transform", "translate(50,30)")
+            .attr("transform", "translate(50,10)")
             .style("font-size", "12px")
             .call(d3.legend);
 
@@ -195,6 +259,7 @@ Graphic.prototype = {
             .attr("stroke", function(d) { return d.color; })
             .attr("stroke-width", "2px")
             .attr("stroke-opacity", 0.8)
+            .attr("data-legend", function(d) { return d.name; })
             .style("fill", function(d) { return d.color; });
 
         context.append("g")
diff --git a/modoboa/extensions/stats/templates/stats/index.html b/modoboa/extensions/stats/templates/stats/index.html
index ca047ab47..a8c9a0197 100644
--- a/modoboa/extensions/stats/templates/stats/index.html
+++ b/modoboa/extensions/stats/templates/stats/index.html
@@ -5,11 +5,10 @@
 <link rel="stylesheet" type="text/css" href="{{ STATIC_URL }}stats/css/stats.css" />
 <script type="text/javascript" src="{{ STATIC_URL }}js/history.js"></script>
 <script type="text/javascript" src="{{ STATIC_URL }}js/autocompleter.js"></script>
-<!--<script type="text/javascript" src="{{ STATIC_URL }}js/d3.v3.js"></script>-->
-<script type="text/javascript" src="http://d3js.org/d3.v2.js"></script>
+<script type="text/javascript" src="{{ STATIC_URL }}js/d3.v3.js"></script>
+
 <!--<script type="text/javascript" src="{{ STATIC_URL }}stats/js/rickshaw.js"></script>
 <script type="text/javascript" src="{{ STATIC_URL }}stats/js/graphic.js"></script>-->
-
 <script type="text/javascript" src="{{ STATIC_URL }}stats/js/d3.legend.js"></script>
 <script type="text/javascript" src="{{ STATIC_URL }}stats/js/graphicset.js"></script>
 <script type="text/javascript" src="{{ STATIC_URL }}stats/js/stats.js"></script>
diff --git a/modoboa/static/js/d3.v3.js b/modoboa/static/js/d3.v3.js
new file mode 100644
index 000000000..77615c0cf
--- /dev/null
+++ b/modoboa/static/js/d3.v3.js
@@ -0,0 +1,5 @@
+d3=function(){function n(n){return null!=n&&!isNaN(n)}function t(n){return n.length}function e(n){for(var t=1;n*t%1;)t*=10;return t}function r(n,t){try{for(var e in t)Object.defineProperty(n.prototype,e,{value:t[e],enumerable:!1})}catch(r){n.prototype=t}}function u(){}function i(){}function o(n,t,e){return function(){var r=e.apply(t,arguments);return r===t?n:r}}function a(n,t){if(t in n)return t;t=t.charAt(0).toUpperCase()+t.substring(1);for(var e=0,r=Do.length;r>e;++e){var u=Do[e]+t;if(u in n)return u}}function c(){}function l(){}function s(n){function t(){for(var t,r=e,u=-1,i=r.length;++u<i;)(t=r[u].on)&&t.apply(this,arguments);return n}var e=[],r=new u;return t.on=function(t,u){var i,o=r.get(t);return arguments.length<2?o&&o.on:(o&&(o.on=null,e=e.slice(0,i=e.indexOf(o)).concat(e.slice(i+1)),r.remove(t)),u&&e.push(r.set(t,{on:u})),n)},t}function f(){mo.event.preventDefault()}function h(){for(var n,t=mo.event;n=t.sourceEvent;)t=n;return t}function g(n){for(var t=new 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\ No newline at end of file