.position().top not a function!?

Hi All,

I used this piece of code repeatedly in old projects but recently i get an error.

(Code placed in CompositionReady inside a window resize function)

$("body").css({width:$(window).width(),height:Array[Array.length-1].position().top+pHeight });

Error:

Uncaught TypeError: homeArray[(homeArray.length - 1)].position is not a function