Roll the Flot JavaScript plotting library to 0.8.1.

third_party/flot/jquery.flot.crosshair.min.js

-(function(b){var a={crosshair:{mode:null,color:"rgba(170, 0, 0, 0.80)",lineWidth:1}};function c(h){var j={x:-1,y:-1,locked:false};h.setCrosshair=function e(l){if(!l){j.x=-1}else{var k=h.p2c(l);j.x=Math.max(0,Math.min(k.left,h.width()));j.y=Math.max(0,Math.min(k.top,h.height()))}h.triggerRedrawOverlay()};h.clearCrosshair=h.setCrosshair;h.lockCrosshair=function f(k){if(k){h.setCrosshair(k)}j.locked=true};h.unlockCrosshair=function g(){j.locked=false};function d(k){if(j.locked){return}if(j.x!=-1){j.x=-1;h.triggerRedrawOverlay()}}function i(k){if(j.locked){return}if(h.getSelection&&h.getSelection()){j.x=-1;return}var l=h.offset();j.x=Math.max(0,Math.min(k.pageX-l.left,h.width()));j.y=Math.max(0,Math.min(k.pageY-l.top,h.height()));h.triggerRedrawOverlay()}h.hooks.bindEvents.push(function(l,k){if(!l.getOptions().crosshair.mode){return}k.mouseout(d);k.mousemove(i)});h.hooks.drawOverlay.push(function(m,k){var n=m.getOptions().crosshair;if(!n.mode){return}var l=m.getPlotOffset();k.save();k.translate(l.left,l.top);if(j.x!=-1){k.strokeStyle=n.color;k.lineWidth=n.lineWidth;k.lineJoin="round";k.beginPath();if(n.mode.indexOf("x")!=-1){k.moveTo(j.x,0);k.lineTo(j.x,m.height())}if(n.mode.indexOf("y")!=-1){k.moveTo(0,j.y);k.lineTo(m.width(),j.y)}k.stroke()}k.restore()});h.hooks.shutdown.push(function(l,k){k.unbind("mouseout",d);k.unbind("mousemove",i)})}b.plot.plugins.push({init:c,options:a,name:"crosshair",version:"1.0"})})(jQuery);
+/* Flot plugin for showing crosshairs when the mouse hovers over the plot.
+
+Copyright (c) 2007-2013 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+The plugin supports these options:
+
+        crosshair: {
+                mode: null or "x" or "y" or "xy"
+                color: color
+                lineWidth: number
+        }
+
+Set the mode to one of "x", "y" or "xy". The "x" mode enables a vertical
+crosshair that lets you trace the values on the x axis, "y" enables a
+horizontal crosshair and "xy" enables them both. "color" is the color of the
+crosshair (default is "rgba(170, 0, 0, 0.80)"), "lineWidth" is the width of
+the drawn lines (default is 1).
+
+The plugin also adds four public methods:
+
+  - setCrosshair( pos )
+
+    Set the position of the crosshair. Note that this is cleared if the user
+    moves the mouse. "pos" is in coordinates of the plot and should be on the
+    form { x: xpos, y: ypos } (you can use x2/x3/... if you're using multiple
+    axes), which is coincidentally the same format as what you get from a
+    "plothover" event. If "pos" is null, the crosshair is cleared.
+
+  - clearCrosshair()
+
+    Clear the crosshair.
+
+  - lockCrosshair(pos)
+
+    Cause the crosshair to lock to the current location, no longer updating if
+    the user moves the mouse. Optionally supply a position (passed on to
+    setCrosshair()) to move it to.
+
+    Example usage:
+
+        var myFlot = $.plot( $("#graph"), ..., { crosshair: { mode: "x" } } };
+        $("#graph").bind( "plothover", function ( evt, position, item ) {
+                if ( item ) {
+                        // Lock the crosshair to the data point being hovered
+                        myFlot.lockCrosshair({
+                                x: item.datapoint[ 0 ],
+                                y: item.datapoint[ 1 ]
+                        });
+                } else {
+                        // Return normal crosshair operation
+                        myFlot.unlockCrosshair();
+                }
+        });
+
+  - unlockCrosshair()
+
+    Free the crosshair to move again after locking it.
+*/(function(e){function n(e){function n(n){if(t.locked)return;t.x!=-1&&(t.x=-1,e.triggerRedrawOverlay())}function r(n){if(t.locked)return;if(e.getSelection&&e.getSelection()){t.x=-1;return}var r=e.offset();t.x=Math.max(0,Math.min(n.pageX-r.left,e.width())),t.y=Math.max(0,Math.min(n.pageY-r.top,e.height())),e.triggerRedrawOverlay()}var t={x:-1,y:-1,locked:!1};e.setCrosshair=function(r){if(!r)t.x=-1;else{var i=e.p2c(r);t.x=Math.max(0,Math.min(i.left,e.width())),t.y=Math.max(0,Math.min(i.top,e.height()))}e.triggerRedrawOverlay()},e.clearCrosshair=e.setCrosshair,e.lockCrosshair=function(r){r&&e.setCrosshair(r),t.locked=!0},e.unlockCrosshair=function(){t.locked=!1},e.hooks.bindEvents.push(function(e,t){if(!e.getOptions().crosshair.mode)return;t.mouseout(n),t.mousemove(r)}),e.hooks.drawOverlay.push(function(e,n){var r=e.getOptions().crosshair;if(!r.mode)return;var i=e.getPlotOffset();n.save(),n.translate(i.left,i.top);if(t.x!=-1){var s=e.getOptions().crosshair.lineWidth%2===0?0:.5;n.strokeStyle=r.color,n.lineWidth=r.lineWidth,n.lineJoin="round",n.beginPath();if(r.mode.indexOf("x")!=-1){var o=Math.round(t.x)+s;n.moveTo(o,0),n.lineTo(o,e.height())}if(r.mode.indexOf("y")!=-1){var u=Math.round(t.y)+s;n.moveTo(0,u),n.lineTo(e.width(),u)}n.stroke()}n.restore()}),e.hooks.shutdown.push(function(e,t){t.unbind("mouseout",n),t.unbind("mousemove",r)})}var t={crosshair:{mode:null,color:"rgba(170, 0, 0, 0.80)",lineWidth:1}};e.plot.plugins.push({init:n,options:t,name:"crosshair",version:"1.0"})})(jQuery);