JQuery :: Using DIV ID As Variable For Some Code

I use 'div id' as a variable for some code I'm working on. The idea is that depending on what 'div' the user clicks on the variable will change as according to the 'div id', as below:
$(document).ready(function(){
$(".box").click(function(e){
var newvar = ("#" + $(this).attr("id") + "Contact");
position();
if(popupStatus==0){
$("#fadedBG").css({
"opacity": "0.5"
});
$("#fadeBG").fadeIn("slow");
$(newvar).fadeIn("slow");
popupStatus = 1;
}});
Now that part of the code is all fine and dandy, however the continued functions, e.g. 'position()', doesn't seem to pick up the newly defined variable.

The rest of the code is outside the brackets of the 'click'-event above, and would look something like:
function position(){
var popH = $(newvar).height();
var popW = $(newvar).width();
...
How come doesn't the continued functions recognize the defined variable 'newvar'? Is it because the code loads as a whole and can not pick up variables later, as when a 'click' event is triggered? Are there ways around this?