From fcbfc2f38004709bc2f0a43ef179d87bd7c33a47 Mon Sep 17 00:00:00 2001
From: scottjehl <scott@scottjehl.com>
Date: Fri, 17 Jun 2011 16:33:19 -0400
Subject: [PATCH] added minScrollBack feature to core options. This is the
 minimum scroll distance that will be jumped-to when returning to a page. By
 default, the distance is screen.height /2. If you really needed to disable
 scroll memory altogether, this could be set to Infinity. Note that disabling
 scroll memory altogether is almost never a good idea for usability, but the
 option is there.

---
 docs/api/globalconfig.html     | 3 +++
 js/jquery.mobile.core.js       | 3 +++
 js/jquery.mobile.navigation.js | 4 ++--
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/docs/api/globalconfig.html b/docs/api/globalconfig.html
index a8e88b90..c2ba0e03 100755
--- a/docs/api/globalconfig.html
+++ b/docs/api/globalconfig.html
@@ -103,6 +103,9 @@ $(document).bind("mobileinit", function(){
 	
 	<dt>defaultDialogTransition (<em>string</em>, default: 'pop'):</dt> 
 	<dd>Set the default transition for dialog changes that use Ajax. Set to 'none' for no transitions by default.</dd>
+
+	<dt>minScrollBack (<em>string</em>, default: 150):</dt> 
+	<dd>Minimum scroll distance that will be remembered when returning to a page. </dd>
 	
 	<dt>loadingMessage (<em>string</em>, default: "loading"):</dt> 
 	<dd>Set the text that appears when a page is loading. If set to false, the message will not appear at all.</dd>
diff --git a/js/jquery.mobile.core.js b/js/jquery.mobile.core.js
index f1b75274..42a06178 100644
--- a/js/jquery.mobile.core.js
+++ b/js/jquery.mobile.core.js
@@ -38,6 +38,9 @@
 
 		//set default page transition - 'none' for no transitions
 		defaultPageTransition: "slide",
+		
+		//minimum scroll distance that will be remembered when returning to a page
+		minScrollBack: screen.height / 2,
 
 		//set default dialog transition - 'none' for no transitions
 		defaultDialogTransition: "pop",
diff --git a/js/jquery.mobile.navigation.js b/js/jquery.mobile.navigation.js
index 08336ced..5a042f12 100644
--- a/js/jquery.mobile.navigation.js
+++ b/js/jquery.mobile.navigation.js
@@ -396,7 +396,7 @@
 		}
 		
 		//if the Y location we're scrolling to is less than 10px, let it go for sake of smoothness
-		if( toScroll < 20 ){
+		if( toScroll < $.mobile.minScrollBack ){
 			toScroll = 0;
 		}
 		
@@ -453,7 +453,7 @@
 	
 	//simply set the active page's minimum height to screen height, depending on orientation
 	function resetActivePageHeight(){
-		var height = jQuery.event.special.orientationchange.orientation() == "portrait" ? screen.height : screen.width,
+		var height = jQuery.event.special.orientationchange.orientation() === "portrait" ? screen.height : screen.width,
 			winHeight = $( window ).height(),
 			pageMin = Math.min( height, winHeight );