/*window.onload=function(){
	init_survey_popup();
}

function init_survey_popup() {
	if (!get_cookie('popup_survey')) { //if cookie is not set then show div
		popup_visibility = 'block';
	} else { //else hide it
		popup_visibility = 'none';
	}
	//set the style for the div 
	var obj = document.getElementById('survey_popup');
	obj.style.display = popup_visibility;
}*/

function take_survey(layer_id, survey_url) {
	set_cookie('popup_survey', 1);
	toggleLayer(layer_id);
	window.open(survey_url, 'surveypopup', '');
}
	
function do_not_take_survey(layer_id) {
	set_cookie('popup_survey', 1);
	toggleLayer(layer_id);
}

// Core javascript helper functions

//hide and show div
function toggleLayer(whichLayer) {
	if (document.getElementById)
	{
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		style2.display = (style2.display=="block") ? "none" : "block";
	}
	else if (document.all)
	{
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		style2.display = (style2.display=="block") ? "none" : "block";
	}
	else if (document.layers)
	{
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		style2.display = (style2.display=="block") ? "none" : "block";
	}
}

//get a flash obj based on browser type
function mObject(movieName){
if (window.document[movieName]) {
      return window.document[movieName];
  }
  if (navigator.appName.indexOf("Microsoft Internet")==-1)
  {
    if (document.embeds && document.embeds[movieName]) {
      return document.embeds[movieName];
    }
  }
  else // if (navigator.appName.indexOf("Microsoft Internet")!=-1)
  {
    return document.getElementById(movieName);
  }
}

//go to a frame in a specified flash movie
function gotoFrame(movie_name,framenr) {
	mov_obj=mObject(movie_name);
	mov_obj.TGotoFrame(framenr);
}

// Cross-browser event handlers.
function addEvent(obj, evType, fn) {
    if (obj.addEventListener) {
        obj.addEventListener(evType, fn, false);
        return true;
    } else if (obj.attachEvent) {
        var r = obj.attachEvent("on" + evType, fn);
        return r;
    } else {
        return false;
    }
}

function removeEvent(obj, evType, fn) {
    if (obj.removeEventListener) {
        obj.removeEventListener(evType, fn, false);
        return true;
    } else if (obj.detachEvent) {
        obj.detachEvent("on" + evType, fn);
    } else {
        return false;
    }
}

// quickElement(tagType, parentReference, textInChildNode, [, attribute, attributeValue ...]);
function quickElement() {
    var obj = document.createElement(arguments[0]);
    if (arguments[2] != '' && arguments[2] != null) {
        var textNode = document.createTextNode(arguments[2]);
        obj.appendChild(textNode);
    }
    var len = arguments.length;
    for (var i = 3; i < len; i += 2) {
        obj.setAttribute(arguments[i], arguments[i+1]);
    }
    arguments[1].appendChild(obj);
    return obj;
}

// ----------------------------------------------------------------------------
// Cross-browser xmlhttp object
// from http://jibbering.com/2002/4/httprequest.html
// ----------------------------------------------------------------------------
var xmlhttp;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
    try {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
        try {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (E) {
            xmlhttp = false;
        }
    }
@else
    xmlhttp = false;
@end @*/
if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
  xmlhttp = new XMLHttpRequest();
}

// ----------------------------------------------------------------------------
// Find-position functions by PPK
// See http://www.xs4all.nl/~ppk/js/index.html?/~ppk/js/findpos.html
// ----------------------------------------------------------------------------
function findPosX(obj) {
    var curleft = 0;
    if (obj.offsetParent) {
        while (obj.offsetParent) {
            curleft += obj.offsetLeft
            obj = obj.offsetParent;
        }
    } else if (obj.x) {
        curleft += obj.x;
    }
    return curleft;
}

function findPosY(obj) {
    var curtop = 0;
    if (obj.offsetParent) {
        while (obj.offsetParent) {
            curtop += obj.offsetTop
            obj = obj.offsetParent;
        }
    } else if (obj.y) {
        curtop += obj.y;
    }
    return curtop;
}

//-----------------------------------------------------------------------------
// Date object extensions
// ----------------------------------------------------------------------------
Date.prototype.getCorrectYear = function() {
    // Date.getYear() is unreliable --
    // see http://www.quirksmode.org/js/introdate.html#year
    var y = this.getYear() % 100;
    return (y < 38) ? y + 2000 : y + 1900;
}

Date.prototype.getTwoDigitMonth = function() {
    return (this.getMonth() < 9) ? '0' + (this.getMonth()+1) : (this.getMonth()+1);
}

Date.prototype.getTwoDigitDate = function() {
    return (this.getDate() < 10) ? '0' + this.getDate() : this.getDate();
}

Date.prototype.getTwoDigitHour = function() {
    return (this.getHours() < 10) ? '0' + this.getHours() : this.getHours();
}

Date.prototype.getTwoDigitMinute = function() {
    return (this.getMinutes() < 10) ? '0' + this.getMinutes() : this.getMinutes();
}

Date.prototype.getISODate = function() {
    return this.getCorrectYear() + '-' + this.getTwoDigitMonth() + '-' + this.getTwoDigitDate();
}

Date.prototype.getHourMinute = function() {
    return this.getTwoDigitHour() + ':' + this.getTwoDigitMinute();
}

// ----------------------------------------------------------------------------
// String object extensions
// ----------------------------------------------------------------------------
String.prototype.pad_left = function(pad_length, pad_string) {
    new_string = this;
    for (var i = 0; new_string.length < pad_length; i++) {
        new_string = pad_string + new_string;
    }
    return new_string;
}

/*
	COOKIE FUNCTIONS
   name - name of the cookie
   value - value of the cookie
   [expires] - expiration date of the cookie
     (defaults to end of current session)
   [path] - path for which the cookie is valid
     (defaults to path of calling document)
   [domain] - domain for which the cookie is valid
     (defaults to domain of calling document)
   [secure] - Boolean value indicating if the cookie transmission requires
     a secure transmission
   * an argument defaults when it is assigned null as a placeholder
   * a null placeholder is not required for trailing omitted arguments
*/

function set_cookie(name, value, expires, path, domain, secure) {
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
  document.cookie = curCookie;
}


/*
  name - name of the desired cookie
  return string containing value of specified cookie or null
  if cookie does not exist
*/

function get_cookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}


/*
   name - name of the cookie
   [path] - path of the cookie (must be same as path used to create cookie)
   [domain] - domain of the cookie (must be same as domain used to
     create cookie)
   path and domain default if assigned null or omitted if no explicit
     argument proceeds
*/

function delete_cookie(name, path, domain) {
  if (get_cookie(name)) {
    document.cookie = name + "=" +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

// date - any instance of the Date object
// * hand all instances of the Date object to this function for "repairs"

function fix_date(date) {
  var base = new Date(0);
  var skew = base.getTime();
  if (skew > 0)
    date.setTime(date.getTime() - skew);
}