JQuery :: Loading Css Files Synchronously?

now im loading css files in that way:

$('head').append('<link rel="stylesheet" type="text/css" href="' + file + '">');

after i need to work with values from this css file.
For example i need to get the width and height of one of element and to put it in another:

$('#myContainer').css({
width: $('#anotherContainer').width(),
height: $('#anotherContainer').height(),
});

so...the problem is that my javascript code is executed before the new css file are successfully loaded...and script goes to get wrong values

is it possible to fix?...or exists another ways to load css filessyncronously???