$(document).ready(function(){
	
	$('.pgewrapper').hide();
	$('.pgemask').css({opacity: 0.8});
		
	$('#book').click(function(){
		$('.pgewrapper').show();
		$('.pgecontainer').pgeConCen();	
	});
						   
	$(window).bind("resize",function(){
		$('.pgecontainer').pgeConCen();					   
	});
	
	$('.pgemask').click(function(){
		$('.pgewrapper').hide();				
	});	
	
	$.fn.pgeConCen = function(){
		Pheight=$(window).height()/2;
		Thisheight=$(this).height()/2;
		Cheight=Pheight-Thisheight;
		$(this).animate({
			"top":Cheight+"px"			
		},{ duration: 200, queue: false });
	};
});// JavaScript Document