+
+
+jQuery.fn.extend({
+ position: function() {
+ var left = 0, top = 0, results;
+
+ if ( this[0] ) {
+ // Get *real* offsetParent
+ var offsetParent = this.offsetParent(),
+
+ // Get correct offsets
+ offset = this.offset(),
+ parentOffset = /^body|html$/i.test(offsetParent[0].tagName) ? { top: 0, left: 0 } : offsetParent.offset();
+
+ // Subtract element margins
+ // note: when an element has margin: auto the offsetLeft and marginLeft
+ // are the same in Safari causing offset.left to incorrectly be 0
+ offset.top -= num( this, 'marginTop' );
+ offset.left -= num( this, 'marginLeft' );
+
+ // Add offsetParent borders
+ parentOffset.top += num( offsetParent, 'borderTopWidth' );
+ parentOffset.left += num( offsetParent, 'borderLeftWidth' );
+
+ // Subtract the two offsets
+ results = {
+ top: offset.top - parentOffset.top,
+ left: offset.left - parentOffset.left
+ };
+ }
+
+ return results;
+ },
+
+ offsetParent: function() {
+ var offsetParent = this[0].offsetParent;
+ while ( offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && jQuery.css(offsetParent, 'position') == 'static') )
+ offsetParent = offsetParent.offsetParent;
+ return jQuery(offsetParent);
+ }
+});
+
+
+// Create scrollLeft and scrollTop methods
+jQuery.each( ['Left', 'Top'], function(i, name) {
+ var method = 'scroll' + name;
+
+ jQuery.fn[ method ] = function(val) {
+ if (!this[0]) return;
+
+ return val != undefined ?
+
+ // Set the scroll offset
+ this.each(function() {
+ this == window || this == document ?
+ window.scrollTo(
+ !i ? val : jQuery(window).scrollLeft(),
+ i ? val : jQuery(window).scrollTop()
+ ) :
+ this[ method ] = val;
+ }) :
+
+ // Return the scroll offset
+ this[0] == window || this[0] == document ?
+ self[ i ? 'pageYOffset' : 'pageXOffset' ] ||
+ jQuery.boxModel && document.documentElement[ method ] ||
+ document.body[ method ] :
+ this[0][ method ];
+ };
+});
+// Create innerHeight, innerWidth, outerHeight and outerWidth methods
+jQuery.each([ "Height", "Width" ], function(i, name){
+
+ var tl = i ? "Left" : "Top", // top or left
+ br = i ? "Right" : "Bottom"; // bottom or right
+
+ // innerHeight and innerWidth
+ jQuery.fn["inner" + name] = function(){
+ return this[ name.toLowerCase() ]() +
+ num(this, "padding" + tl) +
+ num(this, "padding" + br);
+ };
+
+ // outerHeight and outerWidth
+ jQuery.fn["outer" + name] = function(margin) {
+ return this["inner" + name]() +
+ num(this, "border" + tl + "Width") +
+ num(this, "border" + br + "Width") +
+ (margin ?
+ num(this, "margin" + tl) + num(this, "margin" + br) : 0);
+ };
+
+});})();