diff --git a/md_pdf/assets/context.js b/md_pdf/assets/context.js
new file mode 100644
index 0000000..bb59599
--- /dev/null
+++ b/md_pdf/assets/context.js
@@ -0,0 +1,20 @@
+function subst() {
+ var vars = {};
+ var query_strings_from_url = document.location.search.substring(1).split('&');
+ for (var query_string in query_strings_from_url) {
+ if (query_strings_from_url.hasOwnProperty(query_string)) {
+ var temp_var = query_strings_from_url[query_string].split('=', 2);
+ vars[temp_var[0]] = decodeURI(temp_var[1]);
+ }
+ }
+
+ var css_selector_classes = Object.keys(vars);
+ for (var css_class in css_selector_classes) {
+ if (css_selector_classes.hasOwnProperty(css_class)) {
+ var element = document.getElementsByClassName(css_selector_classes[css_class]);
+ for (var j = 0; j < element.length; ++j) {
+ element[j].textContent = vars[css_selector_classes[css_class]];
+ }
+ }
+ }
+}
diff --git a/md_pdf/assets/footer.html b/md_pdf/assets/footer.html
index bda5794..5b5aad1 100644
--- a/md_pdf/assets/footer.html
+++ b/md_pdf/assets/footer.html
@@ -2,7 +2,8 @@
+
-
+
diff --git a/md_pdf/assets/header.html b/md_pdf/assets/header.html
index f2a2694..e8b7db6 100644
--- a/md_pdf/assets/header.html
+++ b/md_pdf/assets/header.html
@@ -2,7 +2,8 @@
+
-
+