jquery.vadjust.js

gistfile1.js

/* 
vadjust plugin. 

adjust top margin on vertically centered elements.
var $vadj = $('[data-vadjust="true"]');
if ($vadj.length > 0) { $vadj.vadjust(); }
*/
;(function($) {
			
	$.fn.vadjust = function(options) 
	{
		this.each(function() { 
			var $this = $(this),
				mgn = (parseFloat($this.height()) / 2) * -1;
			
			$this.css('margin-top', mgn + "px");
		});					
	};
	
})(jQuery);