diff --git a/score/static/js/score.js b/score/static/js/score.js
new file mode 100644
index 0000000..5f3e2f3
--- /dev/null
+++ b/score/static/js/score.js
@@ -0,0 +1,76 @@
+// vim: set ts=2 sw=2 et tw=80:
+
+$(document).ready(() => {
+  const TARGET_EVENTS = $('.target-events');
+  const SCORES = [
+    { name: 'X', maxRadius: 0.025 },
+    { name: '10', maxRadius: 0.05 },
+    { name: '9', maxRadius: 0.1 },
+    { name: '8', maxRadius: 0.15 },
+    { name: '7', maxRadius: 0.2 },
+    { name: '6', maxRadius: 0.25 },
+    { name: '5', maxRadius: 0.3 },
+    { name: '4', maxRadius: 0.35 },
+    { name: '3', maxRadius: 0.4 },
+    { name: '2', maxRadius: 0.45 },
+    { name: '1', maxRadius: 0.5 }
+  ];
+
+  function score(radius) {
+    for (let score of SCORES) {
+      if (radius <= score.maxRadius) {
+        return score.name;
+      }
+    }
+    return 'M';
+  };
+
+  TARGET_EVENTS.on('mousemove', e => {
+    if (TARGET_EVENTS.data('dragging')) {
+      const left = e.originalEvent.pageX - TARGET_EVENTS.offset().left;
+      const top = e.originalEvent.pageY - TARGET_EVENTS.offset().top;
+      markScore(left, top, TARGET_EVENTS.data('dragging')[0]);
+    }
+  });
+  TARGET_EVENTS.on('mouseup', e => {
+    let $marker = TARGET_EVENTS.data('dragging');
+    if ($marker) {
+      $marker.removeClass('orange');
+      $marker.addClass('teal');
+      TARGET_EVENTS.data('dragging', null);
+    } else {
+      markScore(e.originalEvent.offsetX, e.originalEvent.offsetY, false);
+    }
+  });
+
+  function markScore(left, top, marker) {
+    const targetRadius = TARGET_EVENTS.width();
+
+    const x = -0.5 + left / targetRadius;
+    const y = -0.5 + top / targetRadius;
+
+    const radius = Math.sqrt(x * x + y * y);
+
+    if (!marker) {
+      marker = document.createElement("div");
+
+      const $marker = $(marker);
+      $marker.on('mousedown', e => {
+        TARGET_EVENTS.data('dragging', $marker);
+        $marker.removeClass('teal');
+        $marker.addClass('orange');
+        e.preventDefault();
+      });
+
+      marker.className = "score-marker teal";
+
+      TARGET_EVENTS.append(marker);
+    }
+
+    marker.style.left = (x + 0.5) * 100 + "%";
+    marker.style.top = (y + 0.5) * 100 + "%";
+
+    console.log(x, y, score(radius));
+  };
+});
+
diff --git a/score/templates/score/edit.html b/score/templates/score/edit.html
index 48defd5..c6f976c 100644
--- a/score/templates/score/edit.html
+++ b/score/templates/score/edit.html
@@ -7,51 +7,7 @@
 {% block title %}{% trans "Update score" %}{% endblock %}
 
 {% block scripts %}
-<script>
-$(document).ready(() => {
-  const TARGET_EVENTS = $('.target-events');
-  const SCORES = [
-    { name: 'X', maxRadius: 0.025 },
-    { name: '10', maxRadius: 0.05 },
-    { name: '9', maxRadius: 0.1 },
-    { name: '8', maxRadius: 0.15 },
-    { name: '7', maxRadius: 0.2 },
-    { name: '6', maxRadius: 0.25 },
-    { name: '5', maxRadius: 0.3 },
-    { name: '4', maxRadius: 0.35 },
-    { name: '3', maxRadius: 0.4 },
-    { name: '2', maxRadius: 0.45 },
-    { name: '1', maxRadius: 0.5 }
-  ];
-
-  function score(radius) {
-    for (let score of SCORES) {
-      if (radius <= score.maxRadius) {
-        return score.name;
-      }
-    }
-    return 'M';
-  };
-
-  TARGET_EVENTS.on('click', (e) => {
-    const targetRadius = TARGET_EVENTS.width();
-
-    const x = -0.5 + e.originalEvent.offsetX / targetRadius;
-    const y = -0.5 + e.originalEvent.offsetY / targetRadius;
-
-    const radius = Math.sqrt(x * x + y * y);
-
-    const marker = document.createElement("div");
-    marker.className = "score-marker teal";
-    marker.style.left = (x + 0.5) * 100 + "%";
-    marker.style.top = (y + 0.5) * 100 + "%";
-
-    TARGET_EVENTS.parent().append(marker);
-
-    console.log(x, y, score(radius));
-  });
-});
-</script>
+<script src="{% static "js/score.js" %}"></script>
 {% endblock %}
 
 {% block style %}