diff --git a/lib/less/browser.js b/lib/less/browser.js
index 69548739..96edf39d 100644
--- a/lib/less/browser.js
+++ b/lib/less/browser.js
@@ -107,7 +107,7 @@ function createCSS(styles, sheet, lastModified) {
 
     // If there is no title set, use the filename, minus the extension
     title = sheet.title || sheet.href.match(/(?:^|\/)([-\w]+)\.[a-z]+$/i)[1];
-    id = '-less-' + title;
+    id = 'less:' + title;
 
     // If the stylesheet doesn't exist, create a new node
     if ((css = document.getElementById(id)) === null) {
@@ -255,7 +255,7 @@ function error(e, href) {
     if (less.env == 'development') {
         timer = setInterval(function () {
             if (document.body) {
-                document.body.insertBefore(elem, document.body.childNodes[0]);
+                document.body.insertBefore(elem, document.body.firstChild);
                 clearInterval(timer);
             }
         }, 10);