diff --git a/index.js b/index.js
index 68b92d5..1d0f09a 100644
--- a/index.js
+++ b/index.js
@@ -220,7 +220,11 @@ XMLParser.prototype.stackDown = function() {
     }
 };
 
-XMLParser.prototype.parseBuffer = function(buffer, len, event) {
+XMLParser.prototype.parseBuffer = function(buffer, len, external_event) {
+    var self = this;
+    var event = function(state, a, b) {
+       return external_event(state, a, b, self.line, self.col);
+    };
     var i = 0;
     var c = buffer[i];
     while (true) {
@@ -989,4 +993,4 @@ var parseBuffer = exports.parseBuffer = function(buffer) {
 
 exports.parseString = function(str) {
    return parseBuffer(new Buffer(str));
-};
\ No newline at end of file
+};