-// The Offset Method
-// 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;
-
- if ( elem ) with ( jQuery.browser ) {
- var parent = elem.parentNode,
- offsetChild = elem,
- offsetParent = elem.offsetParent,
- doc = elem.ownerDocument,
- safari2 = safari && parseInt(version) < 522,
- fixed = jQuery.css(elem, "position") == "fixed";
-
- // Use getBoundingClientRect if available
- if ( elem.getBoundingClientRect ) {
- var box = elem.getBoundingClientRect();
-
- // Add the document scroll offsets
- add(box.left + Math.max(doc.documentElement.scrollLeft, doc.body.scrollLeft),
- box.top + Math.max(doc.documentElement.scrollTop, doc.body.scrollTop));
-
- // IE adds the HTML element's border, by default it is medium which is 2px
- // IE 6 and 7 quirks mode the border width is overwritable by the following css html { border: 0; }
- // IE 7 standards mode, the border is always 2px
- // This border/offset is typically represented by the clientLeft and clientTop properties
- // However, in IE6 and 7 quirks mode the clientLeft and clientTop properties are not updated when overwriting it via CSS
- // Therefore this method will be off by 2px in IE while in quirksmode
- add( -doc.documentElement.clientLeft, -doc.documentElement.clientTop );
-
- // Otherwise loop through the offsetParents and parentNodes
- } else {
-
- // Initial element offsets
- add( elem.offsetLeft, elem.offsetTop );
-
- // Get parent offsets
- while ( offsetParent ) {
- // Add offsetParent offsets
- add( offsetParent.offsetLeft, offsetParent.offsetTop );
-
- // 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)$/i.test(offsetParent.tagName) || safari && !safari2 )
- border( offsetParent );
-
- // Add the document scroll offsets if position is fixed on any offsetParent
- if ( !fixed && jQuery.css(offsetParent, "position") == "fixed" )
- fixed = true;
-
- // Set offsetChild to previous offsetParent unless it is the body element
- offsetChild = /^body$/i.test(offsetParent.tagName) ? offsetChild : offsetParent;
- // Get next offsetParent
- offsetParent = offsetParent.offsetParent;
+(function( jQuery ) {
+
+var rtable = /^t(?:able|d|h)$/i,
+ rroot = /^(?:body|html)$/i;
+
+if ( "getBoundingClientRect" in document.documentElement ) {
+ jQuery.fn.offset = function( options ) {
+ var elem = this[0], box;
+
+ if ( options ) {
+ return this.each(function( i ) {
+ jQuery.offset.setOffset( this, options, i );
+ });
+ }
+
+ if ( !elem || !elem.ownerDocument ) {
+ return null;
+ }
+
+ if ( elem === elem.ownerDocument.body ) {
+ return jQuery.offset.bodyOffset( elem );
+ }
+
+ try {
+ box = elem.getBoundingClientRect();
+ } catch(e) {}
+
+ var doc = elem.ownerDocument,
+ docElem = doc.documentElement;
+
+ // Make sure we're not dealing with a disconnected DOM node
+ if ( !box || !jQuery.contains( docElem, elem ) ) {
+ return box ? { top: box.top, left: box.left } : { top: 0, left: 0 };
+ }
+
+ var body = doc.body,
+ win = getWindow(doc),
+ clientTop = docElem.clientTop || body.clientTop || 0,
+ clientLeft = docElem.clientLeft || body.clientLeft || 0,
+ scrollTop = (win.pageYOffset || jQuery.support.boxModel && docElem.scrollTop || body.scrollTop ),
+ scrollLeft = (win.pageXOffset || jQuery.support.boxModel && docElem.scrollLeft || body.scrollLeft),
+ top = box.top + scrollTop - clientTop,
+ left = box.left + scrollLeft - clientLeft;
+
+ return { top: top, left: left };
+ };
+
+} else {
+ jQuery.fn.offset = function( options ) {
+ var elem = this[0];
+
+ if ( options ) {
+ return this.each(function( i ) {
+ jQuery.offset.setOffset( this, options, i );
+ });
+ }
+
+ if ( !elem || !elem.ownerDocument ) {
+ return null;
+ }
+
+ if ( elem === elem.ownerDocument.body ) {
+ return jQuery.offset.bodyOffset( elem );
+ }
+
+ jQuery.offset.initialize();
+
+ var computedStyle,
+ offsetParent = elem.offsetParent,
+ prevOffsetParent = elem,
+ doc = elem.ownerDocument,
+ docElem = doc.documentElement,
+ body = doc.body,
+ defaultView = doc.defaultView,
+ prevComputedStyle = defaultView ? defaultView.getComputedStyle( elem, null ) : elem.currentStyle,
+ top = elem.offsetTop,
+ left = elem.offsetLeft;
+
+ while ( (elem = elem.parentNode) && elem !== body && elem !== docElem ) {
+ if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) {
+ break;
+ }
+
+ computedStyle = defaultView ? defaultView.getComputedStyle(elem, null) : elem.currentStyle;
+ top -= elem.scrollTop;
+ left -= elem.scrollLeft;
+
+ if ( elem === offsetParent ) {
+ top += elem.offsetTop;
+ left += elem.offsetLeft;
+
+ if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && rtable.test(elem.nodeName)) ) {
+ top += parseFloat( computedStyle.borderTopWidth ) || 0;
+ left += parseFloat( computedStyle.borderLeftWidth ) || 0;
+ }
+
+ prevOffsetParent = offsetParent;
+ offsetParent = elem.offsetParent;