$(document).ready(function(){
	$("#pop_up_background").css({"opacity": "0.6"});
	//eraseCookie('dc_popup');
  //eraseCookie('dc_popup_remind_later');
  
  $("#popup_yes").click(function(){
    createPopUpCookie();
    closePopUp();
    viewSurvey();
  });
  
  $("#popup_later").click(function(){
    createPopUpCookieRemindLater();
    closePopUp();
  });
  
  $("#popup_never").click(function(){
    createPopUpCookie();
    closePopUp();
  });
  
	//popupCheck();
});

function popupCheck()
{
	var cookiestr = readCookie("dc_popup");
	if(cookiestr == null)
	{
		var cookieremindstr = readCookie("dc_popup_remind_later");
		if(cookieremindstr == null)
		{
			showPopUp();
		}
	}
	else
	{
		return false;
	}
}

function showPopUp()
{
	document.getElementById("dc_popup_window").style.display = "block";
	document.getElementById("pop_up_background").style.display = "block";
}

function closePopUp()
{
	document.getElementById("dc_popup_window").style.display = "none";
	document.getElementById("pop_up_background").style.display = "none";
}

function createPopUpCookie()
{
	createCookie('dc_popup','never_again',365);
}

function createPopUpCookieRemindLater()
{
	createCookie('dc_popup_remind_later','never_again',1);
}

function viewSurvey()
{
	window.open("http://www.durham.police.uk/surveys/web_2009/web_survey_2009.htm", "survey_window");
}

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;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}