$(document).ready(function() {	

var COOKIE_NAME = 'test_cookie';
	
	if ($.cookie(COOKIE_NAME) != 'here' ) {
	//Put in the DIV id you want to display
	launchWindow('#dialog1');

	//if box is clicked
	$('#acceptbox').click(function () {
		$('#mask').hide();
		$('.window').hide();
	});		
	
	}
	
	$.cookie(COOKIE_NAME, 'here');

});
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(500);	
		$('#mask').fadeTo("fast",0.5);	
	
		//Get the window height and width
		var winH = $(window).height();
		var winW = $(window).width();
              
		//Set the popup window to center
		$(id).css('top',  winH/1.2-$(id).height());
		$(id).css('left', winW/2-$(id).width()/2);
	
		//transition effect
		$(id).fadeIn(1000); 
}