jQuery.fn.valign = function() {
	jQuery(this)
		.wrapInner('<div class="valign-box"></div>')
		.css("position", "relative");
		
	xH = jQuery(this).children('.valign-box').height();
	jQuery(this).children('.valign-box')
		.css({
			"position"		: "absolute",
			"height"		: xH,
			"top"			: "50%",
			"margin-top"	: 0-(xH/2)
		});
};