Index: arms/js/analysisTime.js
===================================================================
diff -u -rae44c1443ac984ff6d10e01d6efca5dff330ff65 -r3e114c4a24aa90d115fbd08ae2f72f0f7d470df5
--- arms/js/analysisTime.js	(.../analysisTime.js)	(revision ae44c1443ac984ff6d10e01d6efca5dff330ff65)
+++ arms/js/analysisTime.js	(.../analysisTime.js)	(revision 3e114c4a24aa90d115fbd08ae2f72f0f7d470df5)
@@ -780,7 +780,7 @@
 	totalDate = Math.floor(Math.abs((new Date(latestEndDate) - new Date(fastestStartDate)) / (1000 * 60 * 60 * 24)) + 1);
 
     var mouseover = function (d) {
-        var hoverData = d.target.__data__;
+        var hoverData = d;
         var subgroupId = hoverData.version_id;
         var subgroupName = hoverData.version_name;
         var subgroupValue = new Date(hoverData.start_date).toLocaleDateString() + " ~ " + new Date(hoverData.end_date).toLocaleDateString();
@@ -791,10 +791,10 @@
 		d3.selectAll(".wave-" + subgroupId).style("opacity", 1);
 	};
 
-    var mousemove = function (d) {
-        var [x, y] = d3.pointer(d);
-        tooltip.style("left", (x + 120) + "px").style("top", (y + 150) + "px");
-    };
+	var mousemove = function (d) {
+		var [x, y] = d3.mouse(this);
+		tooltip.style("left", (x + 120) + "px").style("top", (y + 150) + "px");
+	};
 
 	var mouseleave = function (d) {
 		tooltip.style("opacity", 0);