Index: src/offset.js
===================================================================
--- src/offset.js	(revision 5084)
+++ src/offset.js	(working copy)
@@ -2,14 +2,14 @@
 // Originally By Brandon Aaron, part of the Dimension Plugin
 // http://jquery.com/plugins/project/dimensions
 jQuery.fn.offset = function() {
-	var left = 0, top = 0, elem = this[0], results;
+	var left = 0, top = 0, elem = this[0], results, b = jQuery.browser;
 	
-	if ( elem ) with ( jQuery.browser ) {
+	if ( elem ){
 		var parent       = elem.parentNode, 
 		    offsetChild  = elem,
 		    offsetParent = elem.offsetParent, 
 		    doc          = elem.ownerDocument,
-		    safari2      = safari && parseInt(version) < 522 && !/adobeair/i.test(userAgent),
+		    safari2      = b.safari && parseInt(version) < 522 && !/adobeair/i.test(userAgent),
 		    fixed        = jQuery.css(elem, "position") == "fixed";
 	
 		// Use getBoundingClientRect if available
@@ -41,7 +41,7 @@
 			
 				// Mozilla and Safari > 2 does not include the border on offset parents
 				// However Mozilla adds the border for table or table cells
-				if ( mozilla && !/^t(able|d|h)$/i.test(offsetParent.tagName) || safari && !safari2 )
+				if ( b.mozilla && !/^t(able|d|h)$/i.test(offsetParent.tagName) || b.safari && !safari2 )
 					border( offsetParent );
 					
 				// Add the document scroll offsets if position is fixed on any offsetParent
@@ -62,7 +62,7 @@
 					add( -parent.scrollLeft, -parent.scrollTop );
 			
 				// Mozilla does not add the border for a parent that has overflow != visible
-				if ( mozilla && jQuery.css(parent, "overflow") != "visible" )
+				if ( b.mozilla && jQuery.css(parent, "overflow") != "visible" )
 					border( parent );
 			
 				// Get next parent
@@ -72,7 +72,7 @@
 			// Safari <= 2 doubles body offsets with a fixed position element/offsetParent or absolutely positioned offsetChild
 			// Mozilla doubles body offsets with a non-absolutely positioned offsetChild
 			if ( (safari2 && (fixed || jQuery.css(offsetChild, "position") == "absolute")) || 
-				(mozilla && jQuery.css(offsetChild, "position") != "absolute") )
+				(b.mozilla && jQuery.css(offsetChild, "position") != "absolute") )
 					add( -doc.body.offsetLeft, -doc.body.offsetTop );
 			
 			// Add the document scroll offsets if position is fixed