when the loader is below the screen height move it up, also unbind the checkLoaderPosition to speed up scrolling

Author: johnbender

js/jquery.mobile.init.js

@@ -52,7 +52,11 @@ define( [ "jquery", "./jquery.mobile.core", "./jquery.mobile.support", "./jquery
 	// check position of loader to see if it appears to be "fixed" to center
 	// if not, use abs positioning
 	function checkLoaderPosition(){
-		if( $loader.offset().top < $window.scrollTop() ){
+		var offset = $loader.offset(),
+			scrollTop = $window.scrollTop(),
+			htmlHeight = $html.height();
+
+		if( offset.top < scrollTop || (offset.top - scrollTop) > htmlHeight ) {
 			$loader.addClass( "ui-loader-fakefix" );
 			fakeFixLoader();
 			$window
@@ -97,6 +101,7 @@ define( [ "jquery", "./jquery.mobile.core", "./jquery.mobile.support", "./jquery
 			}
 
 			$( window ).unbind( "scroll", fakeFixLoader );
+			$( window ).unbind( "scroll", checkLoaderPosition );
 		},
 
 		// find and enhance the pages in the dom and transition to the first page.