diff --git a/ui/data.js b/ui/data.js
index aa4d6ab9..c30bb924 100755
--- a/ui/data.js
+++ b/ui/data.js
@@ -123,8 +123,6 @@ var SETTINGS = {
 }
 
 var BASE_URL = '.'
-var BASE_URL_HISTORY = []
-var BASE_URL_LIMIT = 10
 
 var IMAGE_CACHE = []
 
@@ -1621,90 +1619,6 @@ function preCacheAllRibbons(){
 
 
 
-/**********************************************************************
-* URL history...
-*/
-
-function setupBaseURLHistory(){
-	$('.viewer')
-		.on('baseURLChanged', function(evt, old_url, new_url){
-			var updated = false
-
-			// store the old and new urls in history unless they already
-			// exist...
-			if(BASE_URL_HISTORY.indexOf(old_url) < 0){
-				BASE_URL_HISTORY.splice(0, 0, old_url)
-				updated = true
-			}
-			if(BASE_URL_HISTORY.indexOf(new_url) < 0){
-				BASE_URL_HISTORY.splice(0, 0, new_url)
-				updated = true
-			}
-
-			// truncate the history if needed...
-			if(BASE_URL_HISTORY.length > BASE_URL_LIMIT){
-				BASE_URL_HISTORY.splice(BASE_URL_LIMIT, BASE_URL_HISTORY.length)
-				updated = true
-			}
-
-			// XXX is this the right place for this???
-			if(updated){
-				saveLocalStorageBaseURLHistory()	
-			}
-		})
-}
-
-
-// Push a url to top of history...
-//
-// NOTE: this does not care if a url exists or not, all other instances 
-// 		will get removed...
-function pushURLHistory(url){
-	url = url == null ? BASE_URL : url
-
-	while(BASE_URL_HISTORY.indexOf(url) >= 0){
-		BASE_URL_HISTORY.splice(BASE_URL_HISTORY.indexOf(url), 1)
-	}
-
-	BASE_URL_HISTORY.splice(0, 0, url)
-
-	// XXX is this the right place for this???
-	saveLocalStorageBaseURLHistory()	
-
-	return url
-}
-
-
-function getURLHistoryPosition(){
-	return BASE_URL_HISTORY.indexOf(BASE_URL)
-}
-function getURLHistoryNext(){
-	var res = BASE_URL_HISTORY[ getURLHistoryPosition() - 1]
-	return res == null ? BASE_URL : res
-}
-function getURLHistoryPrev(){
-	var res = BASE_URL_HISTORY[ getURLHistoryPosition() + 1 ]
-	return res == null ? BASE_URL : res
-}
-
-
-// NOTE: this will not affect history url order...
-function makeURLHistoryLoader(get, end_msg){
-	return function(){
-		var url = get()
-		if(url != BASE_URL){
-			statusNotify(loadDir(url))
-		} else {
-			showStatusQ('History: '+ end_msg +'...')
-		}
-		return url
-	}
-}
-var loadURLHistoryNext = makeURLHistoryLoader(getURLHistoryNext, 'at last URL')
-var loadURLHistoryPrev = makeURLHistoryLoader(getURLHistoryPrev, 'at first URL')
-
-
-
 /**********************************************************************
 * Actions...
 */
diff --git a/ui/index.html b/ui/index.html
index ecdea0f2..14cafe12 100755
--- a/ui/index.html
+++ b/ui/index.html
@@ -23,6 +23,7 @@
 
 <script src="ribbons.js"></script>
 <script src="data.js"></script>
+<script src="urlhistory.js"></script>
 <script src="crop.js"></script>
 <script src="sort.js"></script>
 <script src="workers.js"></script>
diff --git a/ui/urlhistory.js b/ui/urlhistory.js
new file mode 100755
index 00000000..1424cd72
--- /dev/null
+++ b/ui/urlhistory.js
@@ -0,0 +1,120 @@
+/**********************************************************************
+* 
+*
+*
+**********************************************************************/
+
+//var DEBUG = DEBUG != null ? DEBUG : true
+
+
+/*********************************************************************/
+
+var BASE_URL_HISTORY = []
+var BASE_URL_LIMIT = 10
+
+
+
+/**********************************************************************
+* URL history...
+*/
+
+// Setup history event handlers...
+//
+// NOTE: this will save history state to localStorage...
+function setupBaseURLHistory(){
+	$('.viewer')
+		.on('baseURLChanged', function(evt, old_url, new_url){
+			var updated = false
+
+			// store the old and new urls in history unless they already
+			// exist...
+			if(BASE_URL_HISTORY.indexOf(old_url) < 0){
+				BASE_URL_HISTORY.splice(0, 0, old_url)
+				updated = true
+			}
+			if(BASE_URL_HISTORY.indexOf(new_url) < 0){
+				BASE_URL_HISTORY.splice(0, 0, new_url)
+				updated = true
+			}
+
+			// truncate the history if needed...
+			if(BASE_URL_HISTORY.length > BASE_URL_LIMIT){
+				BASE_URL_HISTORY.splice(BASE_URL_LIMIT, BASE_URL_HISTORY.length)
+				updated = true
+			}
+
+			// XXX is this the right place for this???
+			if(updated){
+				saveLocalStorageBaseURLHistory()	
+			}
+		})
+}
+
+
+// Push a url to top of history...
+//
+// NOTE: this does not care if a url exists or not, all other instances 
+// 		will get removed...
+// NOTE: this will not do any loading...
+// NOTE: this will save history state to localStorage...
+function pushURLHistory(url){
+	url = url == null ? BASE_URL : url
+
+	while(BASE_URL_HISTORY.indexOf(url) >= 0){
+		BASE_URL_HISTORY.splice(BASE_URL_HISTORY.indexOf(url), 1)
+	}
+
+	BASE_URL_HISTORY.splice(0, 0, url)
+
+	// XXX is this the right place for this???
+	saveLocalStorageBaseURLHistory()	
+
+	return url
+}
+
+
+// Get current position in history...
+//
+function getURLHistoryPosition(){
+	return BASE_URL_HISTORY.indexOf(BASE_URL)
+}
+
+
+// Get next/prev relative position in history...
+//
+function getURLHistoryNext(){
+	var res = BASE_URL_HISTORY[ getURLHistoryPosition() - 1]
+	return res == null ? BASE_URL : res
+}
+function getURLHistoryPrev(){
+	var res = BASE_URL_HISTORY[ getURLHistoryPosition() + 1 ]
+	return res == null ? BASE_URL : res
+}
+
+
+
+/**********************************************************************
+* Actions...
+*/
+
+// Make a history load action...
+//
+// NOTE: this will not affect history url order...
+function makeURLHistoryLoader(get, end_msg){
+	return function(){
+		var url = get()
+		if(url != BASE_URL){
+			statusNotify(loadDir(url))
+		} else {
+			showStatusQ('History: '+ end_msg +'...')
+		}
+		return url
+	}
+}
+var loadURLHistoryNext = makeURLHistoryLoader(getURLHistoryNext, 'at last URL')
+var loadURLHistoryPrev = makeURLHistoryLoader(getURLHistoryPrev, 'at first URL')
+
+
+
+/**********************************************************************
+* vim:set ts=4 sw=4 :                                                */