- return h == undefined ?
- ( this.length ? jQuery.css( this[0], n ) : null ) :
- this.css( n, h.constructor == String ? h : h + "px" );
+ // Get window width or height
+ return this[0] == window ?
+ // Opera reports document.body.client[Width/Height] properly in both quirks and standards
+ jQuery.browser.opera && document.body["client" + name] ||
+
+ // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
+ jQuery.browser.safari && self["inner" + name] ||
+
+ // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
+ jQuery.boxModel && document.documentElement["client" + name] || document.body["client" + name] :
+
+ // Get document width or height
+ this[0] == document ?
+ // Either scroll[Width/Height] or offset[Width/Height], whichever is greater (Mozilla reports scrollWidth the same as offsetWidth)
+ Math.max( document.body["scroll" + name], document.body["offset" + name] ) :
+
+ // Get or set width or height on the element
+ h == undefined ?
+ // Get width or height on the element
+ ( this.length ? jQuery.css( this[0], n ) : null ) :
+ // Set the width or height on the element (default to pixels if value is unitless)
+ this.css( n, h.constructor == String ? h : h + "px" );