// JavaScript Document
$.fn.extend({
	  center: function () {
			var top = ($(window).height() - $(this).outerHeight()) / 2;
			var left = ($(window).width() - $(this).outerWidth()) / 2;
			$(this).css({position:'absolute', margin:0, top: (top > 0 ? top : 0)+'px', left: (left > 0 ? left : 0)+'px'});
			return this;
		}
 });
 

 
/*var site = new site();
site.layout = {
	center: function() {
			var top = ($(window).height() - $(this).outerHeight()) / 2;
			var left = ($(window).width() - $(this).outerWidth()) / 2;
			$(this).css({position:'absolute', margin:0, top: (top > 0 ? top : 0)+'px', left: (left > 0 ? left : 0)+'px'});
			return this;
	}
};*/