Rename private attribute _element to _el

Change-Id: I9c7a31bd6844636737ffa6456562b997f5e370a3
diff --git a/dev/js/src/match/meta.js b/dev/js/src/match/meta.js
index 2df6a58..02dfa53 100644
--- a/dev/js/src/match/meta.js
+++ b/dev/js/src/match/meta.js
@@ -38,8 +38,8 @@
      * Create match reference view.
      */
     element : function () {
-      if (this._element !== undefined)
-        return this._element;
+      if (this._el !== undefined)
+        return this._el;
 
       if (this._fields === null)
         return;
@@ -47,7 +47,7 @@
       const metaDL = document.createElement('dl');
       metaDL.classList.add("flex");
 
-      this._element = metaDL;
+      this._el = metaDL;
 
       const fields = this._fields;
 
@@ -110,9 +110,9 @@
       });
 
       // Add corpusByMatch assistant
-      this._corpusByMatch = cbmClass.create(this._element);
+      this._corpusByMatch = cbmClass.create(this._el);
 
-      return this._element;
+      return this._el;
     }
   };
 });
diff --git a/dev/js/src/match/querycreator.js b/dev/js/src/match/querycreator.js
index b7d54fc..09d91b8 100644
--- a/dev/js/src/match/querycreator.js
+++ b/dev/js/src/match/querycreator.js
@@ -84,7 +84,7 @@
       );
 
       // Initialize element
-      const e = t._element = document.createElement('p');
+      const e = t._el = document.createElement('p');
       e.classList.add('query','fragment');
 
       // Prepend info text
@@ -310,7 +310,7 @@
     
     // Get element representing annotation line
     element : function () {
-      return this._element;
+      return this._el;
     },
 
 
@@ -332,7 +332,7 @@
 
         // Hide element
         if (t._shown === true) {
-          m.parentNode.removeChild(t._element);
+          m.parentNode.removeChild(t._el);
           t._shown = false;
         }
       }
@@ -344,7 +344,7 @@
 
           // Insert after
           m.parentNode.insertBefore(
-            t._element, m.nextSibling
+            t._el, m.nextSibling
           );
           t._shown = true;
         };
diff --git a/dev/js/src/match/table.js b/dev/js/src/match/table.js
index 9481728..d41fc7b 100644
--- a/dev/js/src/match/table.js
+++ b/dev/js/src/match/table.js
@@ -199,15 +199,15 @@
      * Get HTML table view of annotations.
      */
     element : function () {
-      if (this._element !== undefined)
-        return this._element;
+      if (this._el !== undefined)
+        return this._el;
 
       // First the legend table
       const wrap = d.createElement('div');
 
       const table = wrap.addE('table');
 
-      this._element = wrap;
+      this._el = wrap;
 
       // Single row in head
       let tr = table.addE('thead').addE('tr');
@@ -318,9 +318,9 @@
       }, this);
       
       // Add query creator
-      this._matchCreator = matchQueryCreator.create(this._element);
+      this._matchCreator = matchQueryCreator.create(this._el);
       
-      return this._element;
+      return this._el;
     },
   };
 });
diff --git a/dev/js/src/match/treearc.js b/dev/js/src/match/treearc.js
index 117936c..a90fbed 100644
--- a/dev/js/src/match/treearc.js
+++ b/dev/js/src/match/treearc.js
@@ -441,8 +441,8 @@
      * Get the svg element

      */

     element : function () {

-      if (this._element !== undefined)

-        return this._element;

+      if (this._el !== undefined)

+        return this._el;

 

       // Create svg

       const svg = this._c("svg");

@@ -468,8 +468,8 @@
       arrow.setAttribute("d", "M 0,-5 0,5 10,0 Z");

       marker.appendChild(arrow);

 

-      this._element = svg;

-      return this._element;

+      this._el = svg;

+      return this._el;

     },

 

 

@@ -643,12 +643,12 @@
      *   This is identical to treehierarchy

      */

     center : function () {

-      if (this._element === undefined)

+      if (this._el === undefined)

        return;

 

-      const treeDiv = this._element.parentNode;

+      const treeDiv = this._el.parentNode;

 

-      const cWidth = parseFloat(window.getComputedStyle(this._element).width);

+      const cWidth = parseFloat(window.getComputedStyle(this._el).width);

       const treeWidth = parseFloat(window.getComputedStyle(treeDiv).width);

       // Reposition:

       if (cWidth > treeWidth) {

@@ -661,7 +661,7 @@
     // Show the element

     show : function () {

       const t = this;

-      const svg = this._element;

+      const svg = this._el;

       const height = this.maxArc;

 

       // Delete old group

diff --git a/dev/js/src/match/treehierarchy.js b/dev/js/src/match/treehierarchy.js
index 5273089..a52c883 100644
--- a/dev/js/src/match/treehierarchy.js
+++ b/dev/js/src/match/treehierarchy.js
@@ -186,11 +186,11 @@
      *   This is identical to relations
      */
     center : function () {
-      if (this._element === undefined)
+      if (this._el === undefined)
         return;
 
-      const treeDiv = this._element.parentNode;
-      const cWidth = parseFloat(window.getComputedStyle(this._element).width);
+      const treeDiv = this._el.parentNode;
+      const cWidth = parseFloat(window.getComputedStyle(this._el).width);
       const treeWidth = parseFloat(window.getComputedStyle(treeDiv).width);
 
       // Reposition:
@@ -231,14 +231,14 @@
      */
     element : function () {
 
-      if (this._element !== undefined)
-        return this._element;
+      if (this._el !== undefined)
+        return this._el;
 
       const g = this._graph;
       dagre.layout(g);
       
       const canvas = this._c('svg');
-      this._element = canvas;
+      this._el = canvas;
 
       canvas.appendChild(this._c('defs'));
 
@@ -338,7 +338,7 @@
 
       canvas.setAttribute('width', g.graph().width);
       canvas.setAttribute('height', height);
-      return this._element;
+      return this._el;
     },
     
     downloadLink : function () {