-// 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 absolute = jQuery.css(elem, "position") == "absolute",
- parent = elem.parentNode,
- offsetParent = elem.offsetParent,
- doc = elem.ownerDocument,
- safari2 = safari && parseInt(version) < 522;
-
- // 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 IE 7 quirks mode the border width is overwritable by the following css html { border: 0; }
- // IE 7 standards mode, the border is always 2px
- if ( msie ) {
- var border = jQuery("html").css("borderWidth");
- border = (border == "medium" || jQuery.boxModel && parseInt(version) >= 7) && 2 || border;
- add( -border, -border );
+(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: 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;
+ }
+
+ if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) {
+ top += parseFloat( computedStyle.borderTopWidth ) || 0;
+ left += parseFloat( computedStyle.borderLeftWidth ) || 0;