function createCookie(name,value,days) 
		{
			if (days) 
			{
				var date = new Date();
				date.setTime(date.getTime()+(days*24*60*60*1000));
				var expires = "; expires="+date.toGMTString();
			}
			else var expires = "";
			document.cookie = name+"="+value+expires+"; path=/";
		}

		function readCookie(name) 
		{
			var nameEQ = name + "=";
			var ca = document.cookie.split(';');
			for(var i=0;i < ca.length;i++) 
			{
				var c = ca[i];
				while (c.charAt(0)==' ') c = c.substring(1,c.length);
				if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
			}
			return null;
		}
 					
		agree_referrer = readCookie("agree_referrer");	
		if (agree_referrer && agree_referrer!="")	
		{
			$(document).ready(function(){
				$.unblockUI();
			});	
		}
		else
		{
			
			$(document).ready(function(){
		       $.blockUI({ message: $('#explanation'), css: { width: '464px' } }); 
		    $('#ok').click(function() 
		    { 
		        $.unblockUI();
		        createCookie("agree_referrer","ok",0);
			}); 
			});		    
		    
		}