Changed insertBefore() and insertAfter() to have different implementations for…

Changed insertBefore() and insertAfter() to have different implementations for VML and SVG (was broken in VML). Also changed these functions to return 'this' for chaining.

Signed-off-by: Dmitry Baranovskiy <dmitry.baranovskiy@gmail.com>

raphael.js

@@ -590,6 +590,18 @@ var Raphael = (function (type) {
                 }
                 return this;
             };
+            Element.prototype.insertAfter = function (element) {
+				if (element.Group.nextSibling) {
+					element.Group.parentNode.insertBefore(this.Group, element.Group.nextSibling);
+				} else {
+					element.Group.parentNode.appendChild(this.Group);
+				}
+                return this;
+            };
+            Element.prototype.insertBefore = function (element) {
+				element.Group.parentNode.insertBefore(this.Group, element.Group);
+                return this;
+            };
             var theCircle = function (vml, x, y, r) {
                 var g = document.createElement("rvml:group");
                 var o = document.createElement("rvml:oval");
@@ -1257,6 +1269,18 @@ var Raphael = (function (type) {
                 }
                 return this;
             };
+            Element.prototype.insertAfter = function (element) {
+                if (element.node.nextSibling) {
+                    element.node.parentNode.insertBefore(this.node, element.node.nextSibling);
+                } else {
+                    element.node.parentNode.appendChild(this.node);
+                }
+				return this;
+            };
+            Element.prototype.insertBefore = function (element) {
+                element.node.parentNode.insertBefore(this.node, element.node);
+				return this;
+            };
             var theCircle = function (svg, x, y, r) {
                 var el = document.createElementNS(svg.svgns, "circle");
                 el.setAttribute("cx", x);
@@ -1700,16 +1724,6 @@ var Raphael = (function (type) {
                 })();
                 return this;
             };
-            Element.prototype.insertAfter = function (element) {
-                if (element.node.nextSibling) {
-                    element.node.parentNode.insertBefore(this.node, element.node.nextSibling);
-                } else {
-                    element.node.parentNode.appendChild(this.node);
-                }
-            };
-            Element.prototype.insertBefore = function (element) {
-                element.node.parentNode.insertBefore(this.node, element.node);
-            };
             
             C.pathfinder = function (p, path) {
                 var commands = {