$('.spanner').each(function (index) {
	var characters = $(this).text().split("");  
	$this = $(this);
	$this.empty();
	$.each(characters, function (i, el) {
		$this.append('<span class="single_letter_' + (i+1) + '">' + el + '</span>');
	});
	$('.spanner span').each(function(i) {
		$(this).css({
			'left' : 40 + (i * 40) + 'px',
			'z-index' : (i + 1)
		});
	});
});