added namespace check

Source/SvgElementFactory.cs

@@ -14,6 +14,7 @@ namespace Svg
     internal class SvgElementFactory
     {
         private static List<ElementInfo> availableElements;
+        private const string svgNS = "http://www.w3.org/2000/svg";
 
         /// <summary>
         /// Gets a list of available types that can be used when creating an <see cref="SvgElement"/>.
@@ -77,9 +78,12 @@ namespace Svg
         {
             SvgElement createdElement = null;
             string elementName = reader.LocalName;
+            string elementNS = reader.NamespaceURI;
 
             //Trace.TraceInformation("Begin CreateElement: {0}", elementName);
 
+            if (elementNS == svgNS)
+            {
                 if (elementName == "svg")
                 {
                     createdElement = (fragmentIsDocument) ? new T() : new SvgFragment();
@@ -97,6 +101,7 @@ namespace Svg
                 {
                     SetAttributes(createdElement, reader, document);
                 }
+            }
 
             //Trace.TraceInformation("End CreateElement");