diff --git a/src/static/js/domline.js b/src/static/js/domline.js
index 03f1b9c8..84ebd30e 100644
--- a/src/static/js/domline.js
+++ b/src/static/js/domline.js
@@ -193,7 +193,8 @@ domline.createDomLine = function(nonEmpty, doesWrap, optBrowser, optDocument)
     {
       if (href)
       {
-        if(!~href.indexOf("://") && !~href.indexOf("mailto:")) // if the url doesn't include a protocol prefix, assume http
+        urn_schemes = new RegExp("^(about|geo|mailto|tel):");
+        if(!~href.indexOf("://") && !urn_schemes.test(href)) // if the url doesn't include a protocol prefix, assume http
         {
           href = "http://"+href;
         }
diff --git a/src/static/js/linestylefilter.js b/src/static/js/linestylefilter.js
index 17ab993b..93680515 100644
--- a/src/static/js/linestylefilter.js
+++ b/src/static/js/linestylefilter.js
@@ -266,7 +266,7 @@ linestylefilter.getRegexpFilter = function(regExp, tag)
 
 linestylefilter.REGEX_WORDCHAR = /[\u0030-\u0039\u0041-\u005A\u0061-\u007A\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF\u0100-\u1FFF\u3040-\u9FFF\uF900-\uFDFF\uFE70-\uFEFE\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFDC]/;
 linestylefilter.REGEX_URLCHAR = new RegExp('(' + /[-:@a-zA-Z0-9_.,~%+\/\\?=&#!;()\[\]$]/.source + '|' + linestylefilter.REGEX_WORDCHAR.source + ')');
-linestylefilter.REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|nfs):\/\/|mailto:|www\.)/.source + linestylefilter.REGEX_URLCHAR.source + '*(?![:.,;])' + linestylefilter.REGEX_URLCHAR.source, 'g');
+linestylefilter.REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|nfs):\/\/|(about|geo|mailto|tel):|www\.)/.source + linestylefilter.REGEX_URLCHAR.source + '*(?![:.,;])' + linestylefilter.REGEX_URLCHAR.source, 'g');
 linestylefilter.getURLFilter = linestylefilter.getRegexpFilter(
 linestylefilter.REGEX_URL, 'url');
 
diff --git a/src/static/js/pad_utils.js b/src/static/js/pad_utils.js
index ff60ca7c..5a7700c9 100644
--- a/src/static/js/pad_utils.js
+++ b/src/static/js/pad_utils.js
@@ -176,7 +176,7 @@ var padutils = {
     // copied from ACE
     var _REGEX_WORDCHAR = /[\u0030-\u0039\u0041-\u005A\u0061-\u007A\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF\u0100-\u1FFF\u3040-\u9FFF\uF900-\uFDFF\uFE70-\uFEFE\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFDC]/;
     var _REGEX_URLCHAR = new RegExp('(' + /[-:@a-zA-Z0-9_.,~%+\/?=&#;()$]/.source + '|' + _REGEX_WORDCHAR.source + ')');
-    var _REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|nfs):\/\/|mailto:)/.source + _REGEX_URLCHAR.source + '*(?![:.,;])' + _REGEX_URLCHAR.source, 'g');
+    var _REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|nfs):\/\/|(about|geo|mailto|tel):)/.source + _REGEX_URLCHAR.source + '*(?![:.,;])' + _REGEX_URLCHAR.source, 'g');
 
     // returns null if no URLs, or [[startIndex1, url1], [startIndex2, url2], ...]