+ jQuery.fn[ type ] = function( size ) {
+ // Get window width or height
+ var elem = this[0];
+ if ( !elem ) {
+ return size == null ? null : this;
+ }
+
+ if ( jQuery.isFunction( size ) ) {
+ return this.each(function( i ) {
+ var self = jQuery( this );
+ self[ type ]( size.call( this, i, self[ type ]() ) );
+ });
+ }
+
+ return ("scrollTo" in elem && elem.document) ? // does it walk and quack like a window?
+ // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
+ elem.document.compatMode === "CSS1Compat" && elem.document.documentElement[ "client" + name ] ||
+ elem.document.body[ "client" + name ] :
+
+ // Get document width or height
+ (elem.nodeType === 9) ? // is it a document
+ // Either scroll[Width/Height] or offset[Width/Height], whichever is greater
+ Math.max(
+ elem.documentElement["client" + name],
+ elem.body["scroll" + name], elem.documentElement["scroll" + name],
+ elem.body["offset" + name], elem.documentElement["offset" + name]
+ ) :
+
+ // Get or set width or height on the element
+ size === undefined ?
+ // Get width or height on the element
+ jQuery.css( elem, type ) :