diff --git a/static/script.js b/static/script.js
index 1f02ddc..74623f5 100644
--- a/static/script.js
+++ b/static/script.js
@@ -3,8 +3,8 @@ function growTextarea(name) {
     var rows=el.value.split(/\r?\n|\r/);
     el.rows=rows.length+1;
     var cols=40;
-    for (var i = 0, row; row = rows[i]; i++) {
-        cols=Math.max(cols, row.length);
+    for (var i = 0; i<rows.length; i++) {
+        cols=Math.max(cols, rows[i].length);
     }
     el.cols=cols;
 }