hover preview window location fixes after prototype 1.71 update.

lib/static/javascript/auto/50_preview.js

@@ -1,32 +1,19 @@
-
 function EPJS_ShowPreview( e, preview_id ) 
 {
-	var box_w = 410;
-	var box_h = 330;
-
-	var screen_w = document.viewport.getDimensions().width;
-	var screen_h = document.viewport.getDimensions().height;
-
-	var x = document.viewport.getScrollOffsets().left;
-	var y = document.viewport.getScrollOffsets().top;
-
 	var box = $(preview_id);
 
 	box.style.display = 'block';
 	box.style.zIndex = 1000;
 
-	box.style.top = y + screen_h/2 - box_h/2 + "px";
+	// Note can find triggering element using findElement
+	var elt = Event.findElement( e );
+
 
-	var midscreen = x + screen_w/2;
-	var x_pointer = Event.pointerX(e);
-	if( x_pointer < midscreen )
-		box.style.left = midscreen + screen_w/4 - box_w/2 + "px";
-	else
-		box.style.left = midscreen - screen_w/4 - box_w/2 + "px";
+//	Element.clonePosition( box, elt, { offsetLeft: (Element.getWidth( elt )) } );  //on the right
+	Element.clonePosition( box, elt, { setWidth:false, offsetLeft: -(Element.getWidth( box )) }  );   //on the left
 }
 
 function EPJS_HidePreview( e, preview_id )
 {
 	$(preview_id).style.display = 'none';
 }
-