I am working on a project where I am using the jQuery UI selectmenu and jQuery UI Tooltip (among others) where the design requires a different style based on the offset. I've modified my version of jquery.ui.position.js to add a class based on the flip. For instance, if it's flipped left, the flipped element gets a class of ".ui-flpped-left".
So my question is, is this something that should be in the position codebase or is there a better place?