Fixed the case where getComputedStyled was assumed to exist if...

Fixed the case where getComputedStyled was assumed to exist if getBoundingClientRect did (which isn't the case on the Playstation 3). Fixes #5467.

src/offset.js

@@ -35,13 +35,13 @@ if ( "getBoundingClientRect" in document.documentElement ) {
 		var offsetParent = elem.offsetParent, prevOffsetParent = elem,
 			doc = elem.ownerDocument, computedStyle, docElem = doc.documentElement,
 			body = doc.body, defaultView = doc.defaultView,
-			prevComputedStyle = defaultView.getComputedStyle( elem, null ),
+			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.getComputedStyle(elem, null);
+			computedStyle = defaultView ? defaultView.getComputedStyle(elem, null) : elem.currentStyle;
 			top  -= elem.scrollTop;
 			left -= elem.scrollLeft;