assigned the value of an inner function expression returned from
a one-time call to an outer function expression.
That inner function returns a string of HTML that represents an
absolutely positioned DIV wrapped round an IMG element, such that
all of the variable attribute values are provided as parameters
to the function call:-
*/
var getImgInPositionedDivHtml = (function(){
/* The - buffAr - Array is assigned to a local variable of the
outer function expression. It is only created once and that one
instance of the array is available to the inner function so that
it can be used on each execution of that inner function.
Empty strings are used as placeholders for the date that is to
be inserted into the Array by the inner function:-
*/
var buffAr = [
'<div id="',
'', //index 1, DIV ID attribute
'" style="position:absolute;top:',
'', //index 3, DIV top position
'px;left:',
'', //index 5, DIV left position
'px;width:',
'', //index 7, DIV width
'px;height:',
'', //index 9, DIV height
'px;overflow:hidden;"><img src="',
'', //index 11, IMG URL
'" width="',
'', //index 13, IMG width
'" height="',
'', //index 15, IMG height
