Edited to make question more concise.
Can i use the outerWidth() value within the .css() method to offset the position of the “#item” by two times it’s width.
For example:
$("#item").css("left", - (2 x outerwidth(this)));
The accepted answer, refers heavily to the original (more convoluted and broad) question I asked encompassing a wider set of functions I was developing.
elem.css('left', $(window).width()+'px');
This moved the element suitably, without relying on the outerWidth() value.
Something like this: