diff --git a/xlsx.js b/xlsx.js
index df10083..a9ffb58 100644
--- a/xlsx.js
+++ b/xlsx.js
@@ -148,7 +148,10 @@ function parseProps(data) {
 	
 	strings.forEach(function(f){p[f] = (data.match(matchtag(f))||[])[1];});
 	bools.forEach(function(f){p[f] = data.match(matchtag(f))[1] == "true";});
-	xtra.forEach(function(f){q[f] = data.match(new RegExp("<" + f + "[^>]*>(.*)<\/" + f + ">"))[1];});
+	xtra.forEach(function(f) {
+		var cur = data.match(new RegExp("<" + f + "[^>]*>(.*)<\/" + f + ">"));
+		if(cur && cur.length > 0) q[f] = cur[1];
+	});
 
 	p["Worksheets"] = parseInt(q["HeadingPairs"].match(new RegExp("<vt:i4>(.*)<\/vt:i4>"))[1], 10); 
 	p["SheetNames"] = q["TitlesOfParts"].match(new RegExp("<vt:lpstr>([^<]*)<\/vt:lpstr>","g")).map(function(x){return x.match(new RegExp("<vt:lpstr>([^<]*)<\/vt:lpstr>"))[1];});
@@ -304,6 +307,55 @@ function split_cell(cstr) { return cstr.replace(/(\$?[A-Z]*)(\$?[0-9]*)/,"$1,$2"
 function decode_cell(cstr) { var splt = split_cell(cstr); return { c:decode_col(splt[0]), r:decode_row(splt[1]) }; }
 function decode_range(range) { var x =range.split(":").map(decode_cell); return {s:x[0],e:x[x.length-1]}; }
 
+/**
+ * Convert a sheet into an array of objects where the column headers are keys.
+ **/
+function sheet_to_row_object_array(sheet){
+	var val, rowObject, range, columnHeaders, emptyRow, C;
+	var outSheet = [];
+	if (sheet["!ref"]) {
+		range = XLSX.utils.decode_range(sheet["!ref"]);
+
+		columnHeaders = {};
+		for (C = range.s.c; C <= range.e.c; ++C) {
+			val = sheet[XLSX.utils.encode_cell({
+				c: C,
+				r: range.s.r
+			})];
+			if(val){
+				if(val.t === "s"){
+					columnHeaders[C] = val.v;
+				}
+			}
+		}
+
+		for (var R = range.s.r + 1; R <= range.e.r; ++R) {
+			emptyRow = true;
+			//Row number is recorded in the prototype
+			//so that it doesn't appear when stringified.
+			rowObject = Object.create({ __rowNum__ : R });
+			for (C = range.s.c; C <= range.e.c; ++C) {
+				val = sheet[XLSX.utils.encode_cell({
+					c: C,
+					r: R
+				})];
+				if(val){
+					if(val.t === "s"){
+						rowObject[columnHeaders[C]] = val.v;
+					} else {
+						throw 'unrecognized type ' + val.t;
+					}
+					emptyRow = false;
+				}
+			}
+			if(!emptyRow) {
+				outSheet.push(rowObject);
+			}
+		}
+	}
+	return outSheet;
+}
+
 var utils = {
 	encode_col: encode_col,
 	encode_row: encode_row,
@@ -312,7 +364,8 @@ var utils = {
 	decode_row: decode_row,
 	split_cell: split_cell,
 	decode_cell: decode_cell,
-	decode_range: decode_range
+	decode_range: decode_range,
+	sheet_to_row_object_array: sheet_to_row_object_array
 };
 
 if(typeof require !== 'undefined' && typeof exports !== 'undefined') {