(function($) {
	
		var COOKIE_NAME = 'launchWindow';
		var options = { path: '/', expires: 360 };
			
		var affichage = $.cookie(COOKIE_NAME);
		
		if (affichage === null) {
			//Put in the DIV id you want to display
			launchWindow('#dialog');
		}
		
		//if close button is clicked
		$('.window #close').click(function (e) {
			e.preventDefault();
			$('#mask').hide();
			$('.window').hide();
			// set cookie by number of days
			$.cookie(COOKIE_NAME, 'nomore', options);
		});		
		
		//if mask is clicked
		$('#mask').click(function () {
			$(this).hide();
			$('.window').hide();
			// set cookie by number of days
			$.cookie(COOKIE_NAME, 'nomore', options);
		});			
	 
	function launchWindow(id) {
		
			//Get the screen height and width
			var maskHeight = $(document).height();
			var maskWidth = $(window).width();
		
			//Set heigth and width to mask to fill up the whole screen
			$('#mask').css({'width':maskWidth,'height':maskHeight});
			
			//transition effect		
			$('#mask').fadeIn(1000);	
			$('#mask').fadeTo("slow",0.8);	
		
			//Get the window height and width
			var winH = $(window).height();
			var winW = $(window).width();
								
			//Set the popup window to center
			$(id).css('top',  winH/2-$(id).height());
			$(id).css('left', winW/2-$(id).width()/2);
		
			//transition effect
			$(id).fadeIn(2000); 
	}
})(jQuery);