var namespace = (function(){
	var centerDiv = function(){
			var outer_width = $(window).width();
			var outer_height = $(window).height();
			
			var obj_width = 	960;//document.getElementById('wrapper').offsetWidth;
			var obj_height = 	200;//document.getElementById('wrapper').offsetHeight;
			var obj_left =		document.getElementById('wrapper').left;
			var obj_top =		document.getElementById('wrapper').top;
			
				$('#wrapper').css(
					'left', Math.max((outer_width / 2) - (obj_width / 2), -1)
				).css(
					'top', Math.max((outer_height / 2) - (obj_height / 2), -1)
				);
		}
		
		return { 
  			centerDiv: centerDiv
		};
	
})();

$(document).ready(function(){
		namespace.centerDiv();
	
		$(window).resize(function(){
			namespace.centerDiv();
		});
});