function zwPanel(param, formId, validationCall, cookiePrefix, submissionRefId, trackbackTag) {
	
	this.zParam = param;
	this.zFormId = formId;
	this.zValidationCall = validationCall;
	this.zCookiePrefix = cookiePrefix;
	this.zSubmissionRefId = submissionRefId;
	this.zTrackbackTag = trackbackTag;
	this.zPostPause = 2000;

	this.zGotoParamParam;
	this.zGotoParamPage;
	this.zGotoParamLink;
	this.zTrackback;
	this.zExternalFormUrl;
	
	zwPanel.prototype.qStringValue = zQStringValue;

	// navigation methods
	zwPanel.prototype.setPageParams = zSetPageParams;
	zwPanel.prototype.gotoPage = zGotoPage;
	zwPanel.prototype.gotoPageReturn = zGotoPageReturn;
	zwPanel.prototype.gotoNextPage = zGotoNextPage;
	zwPanel.prototype.gotoPrevPage = zGotoPrevPage;	
	zwPanel.prototype.redirect = zRedirect;	
	
	// Form methods
	zwPanel.prototype.isRadioSelected = isRadioSelected;
	zwPanel.prototype.getFieldValue = zGetFieldValue;
	zwPanel.prototype.setFieldValue = zSetFieldValue;
	zwPanel.prototype.defaultForm = zDefaultForm;
	zwPanel.prototype.storeForm = zStoreForm;
	zwPanel.prototype.submitZForm = zSubmitZForm;
	zwPanel.prototype.submitZFormRedirect = zSubmitZFormRedirect;
	zwPanel.prototype.hasForm = zHasForm;
	zwPanel.prototype.isPageComplete = zIsPageComplete;
	zwPanel.prototype.postSubmissionVars = zPostSubmissionVars;
	zwPanel.prototype.setExternalFormUrl = zSetExternalFormUrl;
	
	zwPanel.prototype.formToCookies = zFormToCookies;
	zwPanel.prototype.cookiesToForm = zCookiesToForm;

	zwPanel.prototype.setEmailKey = zSetEmailKey;
	zwPanel.prototype.getEmailKey = zGetEmailKey;
	
	// Cookie methods
	zwPanel.prototype.incrementPageCount = zIncrementPageCount;
	zwPanel.prototype.decrementPageCount = zDecrementPageCount;
	zwPanel.prototype.setPageCookieForNextPage = zSetPageCookieForNextPage;
	zwPanel.prototype.getPageCookieForPrevPage = zGetPageCookieForPrevPage;
	zwPanel.prototype.clearCookies = zClearCookies;
	zwPanel.prototype.setC = zSetC;
	zwPanel.prototype.getC = zGetC;
	zwPanel.prototype.setZiftC = zSetZiftC;
	zwPanel.prototype.getZiftC = zGetZiftC;
	
	// Serialization of form data/Trackback links
	zwPanel.prototype.getSerializedData = zGetSerializedData;
	zwPanel.prototype.loadSerialized = zLoadSerialized;
	zwPanel.prototype.excludeFromTrackback = zExcludeFromTrackback;
	zwPanel.prototype.getTrackbackLink = zGetTrackbackLink;
	zwPanel.prototype.setTrackbacks = zSetTrackbacks;	
}
function zGetFormId() {
	return this.zFormId;
}
function zSetExternalFormUrl(url) {
	this.zExternalFormUrl = url;
}
function zQStringValue(param) {
	var query=document.location.search.substring(1);
	if (query.length > 0){
		var params=query.split('&');
		for (var i=0 ; i<params.length ; i++){
            var pos = params[i].indexOf('=');
            var name = params[i].substring(0, pos);
            var value = params[i].substring(pos + 1);
            if (name == param) {
            	return value;
            	break;
            }
		}
	}
	return null
}
function isRadioSelected(fieldName) {
	var zForm = document.getElementById(zPanel.zFormId);
	if (zForm != null) {
		var zChecked = false;
		var elems = document.getElementsByName(fieldName);
		for (var i = 0; i < elems.length && !zChecked; i++) {
			var elem = elems[i];
			var id = elem.id;
			if (elem.tagName.toLowerCase() == 'input' && elem.type == 'radio' && id.indexOf(fieldName) == 0) { 
				zChecked = elem.checked;				
			}
		}
		return zChecked;
	}
	return true;
}
function zSetPageParams(param, page, link) {
	this.zGotoParamParam = param;
	this.zGotoParamPage = page;
	this.zGotoParamLink = link;
}
function zGotoPage(param, page, link, doSubmit) {
	this.setPageParams(param, page, link);
	if (doSubmit && this.hasForm()) {
		var success = eval(this.zValidationCall);
		if (success) {
			this.storeForm();
			this.submitZForm();
			//this.gotoPageReturn();
		}
	} else {
		this.storeForm();
		this.gotoPageReturn();
	}
}
function zRedirect(param, url, target) {
	//var cleanurl = unescape(url);
	this.setPageParams(param);
	var doRedirect = false;
	if (this.hasForm()) {
		doRedirect = eval(this.zValidationCall);
		if (doRedirect) {
			this.storeForm();
			this.submitZFormRedirect(url, target);
			doRedirect = false;
		}
	} else {
		doRedirect = true;
		this.storeForm();				
	}	
	if (doRedirect) {
		if (target == null)
			document.location.href = url;
		else {
			window.open(url);
		}
	}
}
function zIsPageComplete(param, step, page) {
	var isComplete = false;
	try {
		var stepId = step;
		if (step == "next")
			stepId = zGetNextPageInternal(param, page);
		if (this.getC(this.zCookiePrefix + "step" + stepId) == "submitted")
			isComplete = true;
	} catch (err) {
	}
	return isComplete;
}
function zGotoPageReturn() {
	var param = this.zGotoParamParam;
	var page = this.zGotoParamPage;
	var link = this.zGotoParamLink;
	var urlBase = document.location.href;
	if (urlBase.indexOf('#') != -1) {
		urlBase = urlBase.substring(0,urlBase.indexOf('#'));
	}
	var index = urlBase.indexOf('?');
	var prevPage = '';
	var oldQuery = '';
	if (index != -1) {
		oldQuery = urlBase.substring(index + 1);
		urlBase = urlBase.substring(0,index);
	}
	var newQuery = '';
	if (oldQuery.length > 0){
		var found = false;
		var params=oldQuery.split('&');
		for (var i=0 ; i<params.length ; i++){
			var pos = params[i].indexOf('=');
			var name = params[i].substring(0, pos);
			var value = params[i].substring(pos + 1);
			if (name == param) {
				if (newQuery.length > 0) newQuery += '&';
				newQuery += param + '=' + page;
				found = true;
				prevPage = value;
			} else if (name != 'zKey' && name != 'zSerial') {
				if (newQuery.length > 0) newQuery += '&';
				newQuery += params[i];
			}
		}
		if (!found)
			newQuery += '&' + param + '=' + page;
	} else {
		newQuery = param + '=' + page;
	}
	document.location.href = urlBase + '?' + newQuery;
}
function zGotoNextPage(param, link) {
	zGotoNextPageInternal(param, link);
}
function zGotoPrevPage(param, link) {
	var prevPage = this.getPageCookieForPrevPage();
	this.decrementPageCount();
	this.gotoPage(param, prevPage, link);
}
function zIncrementPageCount() {
	var pageCount = this.getC(this.zCookiePrefix + 'zPageCount');
	if (pageCount == null || pageCount == '' || (new Number(pageCount)) < 0)
		pageCount = 0;
	this.setC(this.zCookiePrefix + 'zPageCount', (new Number(pageCount) + 1), 10);
}
function zDecrementPageCount() {
	var pageCount = this.getC(this.zCookiePrefix + 'zPageCount');
	if (pageCount == null || pageCount == '' || (new Number(pageCount)) < 1)
		pageCount = 1;
	this.setC(this.zCookiePrefix + 'zPageCount', (new Number(pageCount) - 1), 10);
}
function zSetPageCookieForNextPage(value) {
	var pageCount = this.getC(this.zCookiePrefix + 'zPageCount');
	if (pageCount == null || pageCount == '')
		pageCount = 0;
	this.setC(this.zCookiePrefix + 'zPreviousPage_' + pageCount, value, 10);
}
function zGetPageCookieForPrevPage() {
	var pageCount = this.getC(this.zCookiePrefix + 'zPageCount');
	if (pageCount != null && pageCount != '' && pageCount != 0) {
		pageCount = (new Number(pageCount)) - 1;
		return this.getC(this.zCookiePrefix + 'zPreviousPage_' + pageCount);
	}
	return '';
}
function zGetFieldValue(elem) {
	if (elem.tagName.toLowerCase() == 'input' && elem.getAttribute('ziftinternal') == null) {
		if (elem.type == 'text' || elem.type == 'hidden') return elem.value;
		else if (elem.type == 'checkbox') return elem.checked.toString();
		else if (elem.type == 'radio') return elem.checked.toString();
	} else if (elem.tagName.toLowerCase() == 'textarea') {
		return elem.value;
	} else if (elem.tagName.toLowerCase() == 'select') {
		return elem.selectedIndex.toString();
	}
	return null;
}
function zSetFieldValue(elem, value) {
	if (elem.getAttribute("cookie") && elem.getAttribute("cookie") == 'ignore')
		return;
	if (elem.tagName.toLowerCase() == 'input' && elem.getAttribute('ziftinternal') == null) {
		if (elem.type == 'text') elem.value = value;
		else if (elem.type == 'hidden') elem.value = value;
		else if (elem.type == 'checkbox') elem.checked = (value == Boolean(true).toString());
		else if (elem.type == 'radio') elem.checked = (value == Boolean(true).toString());
	} else if (elem.tagName.toLowerCase() == 'textarea') {
		elem.value = value;
	} else if (elem.tagName.toLowerCase() == 'select') {
		elem.selectedIndex = value;
	}
}
function zFormToCookies(zForm) {
	for (var i = 0; i < zForm.length; i++) {
		var value = this.getFieldValue(zForm.elements[i]);
		if (value) {
			this.setC(this.zCookiePrefix + zForm.elements[i].id, value, 10);
		}
	}
}
function zCookiesToForm(zForm) {
	for (var i = 0; i < zForm.length; i++) {
		if (zForm.elements[i].id == "emailKey") {
			this.setFieldValue(zForm.elements[i], this.getEmailKey());
		} else {
			var value = this.getC(this.zCookiePrefix + zForm.elements[i].id);
			if (value)
				this.setFieldValue(zForm.elements[i], value);
		}
	}
}
function zClearCookies() {
	var cookies = document.cookie.split(';');
	for(var i=0;i < cookies.length;i++) {
		var c = cookies[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(this.zCookiePrefix) == 0 && c.indexOf('zpreviouspage') == -1 && c.indexOf('zpagecount') == -1) {
			var parts = c.split('=');
			this.setC(parts[0], '', 1);
		}
	}
}
function zGetSerializedData() {
	if (document.getElementById(this.zFormId) != null)
		this.formToCookies(document.getElementById(this.zFormId));
	var cookies = document.cookie.split(';');
	var serial = '';
	var zKey = 'k' + Math.floor(Math.random()*1001);
	for(var i=0;i < cookies.length;i++) {
		var c = cookies[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(this.zCookiePrefix) == 0 && !this.excludeFromTrackback(c)) {
			var parts = c.split('=');
			if (serial != '') serial += '&';
			serial += encodeURI(zKey + parts[0].substring(this.zCookiePrefix.length)) + '=' + encodeURI(parts[1]);
		}
	}
	return 'zKey=' + zKey + '&zSerial=' + encodeURIComponent(serial);
}
function zLoadSerialized() {
	var key = this.qStringValue('zKey');
	var serial = this.qStringValue('zSerial');
	if (key != null && key != '') {
		this.clearCookies();
		var serials = decodeURIComponent(serial).split('&');
		for(var i=0;i < serials.length;i++) {
			var field = serials[i];
			var name = decodeURI(field.split('=')[0]);
			var value = decodeURI(field.split('=')[1]);
			this.setC(this.zCookiePrefix + name.substring(key.length), value, 1);
		}
	}
}
function zExcludeFromTrackback(param) {
	if (param.indexOf('zpreviouspage') != -1 || param.indexOf('zpagecount') != -1 || param.indexOf(this.zSubmissionRefId) != -1) {
		return true;
	}
	var value = param.split('=')[1];
	if (value == 'false' || value == '') return true;
	return false;
}

function zGetTrackbackLink() {
	if (this.zTrackback != null && this.zTrackback != '') 
		return this.zTrackback;
	this.zTrackback = document.location.href;
	if (this.zTrackback.indexOf('?') == -1) this.zTrackback += '?'; 
	else this.zTrackback += '&';
	this.zTrackback += this.getSerializedData();
	return this.zTrackback;
}
function zSetTrackbacks() {
	var elems = document.getElementsByName(this.zTrackbackTag);
	for(var i=0;i < elems.length;i++) {
		if (elems[i].tagName.toLowerCase() == 'a') elems[i].href = this.getTrackbackLink();
		else if (elems[i].tagName.toLowerCase() == 'span' || elems[i].tagName.toLowerCase() == 'textarea') elems[i].innerHTML = this.getTrackbackLink();
	}
}
function zSetC(name,value,days) {
	var expires = '';
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = '; expires='+date.toGMTString();
	} 
	document.cookie = name.toLowerCase()+'='+value+expires+'; path=/';
}
function zSetZiftC(name,value,days) {
	this.setC(this.zCookiePrefix + name, value, days);
}
function zGetC(name) {
	var nameEQ = name.toLowerCase() + '=';
	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 zGetZiftC(name) {
	return this.getC(this.zCookiePrefix + name);
}
function zDefaultForm() {
	if (document.getElementById(this.zFormId) != null)
		this.cookiesToForm(document.getElementById(this.zFormId));
}
function zHasForm() {
	return document.getElementById(this.zFormId) != null;
}
function zStoreForm() {
	if (this.hasForm()) {
		if (document.getElementById(this.zSubmissionRefId).value == '') {
			var rand = Math.floor(Math.random()*1000000000000001);
			document.getElementById(this.zSubmissionRefId).value = rand;
		}
		try {
			this.formToCookies(document.getElementById(this.zFormId));
		} catch(err) {}
		return true;
	}
	return false;
}
function zPause(millis) {
	var date = new Date();
	var curDate = null;

	do { curDate = new Date(); }
	while(curDate-date < millis);
}
function zSubmitZForm() {
	var n = 'f' + Math.floor(Math.random() * 99999);
	var d = document.createElement('DIV');
	
	d.innerHTML = '<iframe style="display:none" src="about:blank" id="'+n+'" name="'+n+'" onload="zFormComplete(\'' + n + '\')"></iframe>';
	document.body.appendChild(d);

	document.getElementById(this.zFormId).setAttribute('target',n);
	document.getElementById(this.zFormId).submit();	
}
function zFormComplete(id) {
	try {
	var i = document.getElementById(id);
	if (i.contentDocument) {
		var d = i.contentDocument;
	} else if (i.contentWindow) {
		var d = i.contentWindow.document;
	} else {
		var d = window.frames[id].document;
	}
	if (d.location.href == "about:blank") {
		return;
	}
	} catch (err) {}
	zPanel.gotoPageReturn();
}
function zSubmitZFormRedirect(url, target) {
	var n = 'f' + Math.floor(Math.random() * 99999);
	var d = document.createElement('DIV');
	
	d.innerHTML = '<iframe style="display:none" src="about:blank" id="'+n+'" name="'+n+'" onload="zFormCompleteRedirect(\'' + n + '\', \'' + url + '\', \'' + target + '\')"></iframe>';
	document.body.appendChild(d);

	document.getElementById(this.zFormId).setAttribute('target',n);
	document.getElementById(this.zFormId).submit();	
}
function zFormCompleteRedirect(id, url, target) {
	try {
	var i = document.getElementById(id);
	if (i.contentDocument) {
		var d = i.contentDocument;
	} else if (i.contentWindow) {
		var d = i.contentWindow.document;
	} else {
		var d = window.frames[id].document;
	}
	if (d.location.href == "about:blank") {
		return;
	}
	} catch (err) {}
	if (target != 'undefined' && target != null) {
		window.open(url);
	} else {
		document.location.href = url;
	}
}
function zPostSubmissionVars(submissionVars) {
	var dHidden = document.createElement('DIV');
	dHidden.style.display = "none";
	var f = document.createElement('FORM');
	f.name = 'f' + Math.floor(Math.random() * 99999);
	f.action = this.zExternalFormUrl;
	var inputVars = document.createElement('INPUT');
	inputVars.type = "text";
	inputVars.name = "submissionVars";
	inputVars.value = submissionVars;
	f.appendChild(inputVars);
	
	var inputRefId = document.createElement('INPUT');
	inputRefId.type = "text";
	inputRefId.name = this.zSubmissionRefId;
	inputRefId.value = this.getC(this.zCookiePrefix + this.zSubmissionRefId);
	f.appendChild(inputRefId);
	dHidden.appendChild(f);
	document.body.appendChild(dHidden);
	
	var n = 'f' + Math.floor(Math.random() * 99999);
	var d = document.createElement('DIV');	
	d.innerHTML = '<iframe style="display:none" src="about:blank" id="'+n+'" name="'+n+'"></iframe>';
	document.body.appendChild(d);

	f.setAttribute('target',n);
	f.submit();
	zPause(this.zPostPause);
}
function zSetEmailKey() {
	var ekey = this.qStringValue("CakeUUID");
	if (ekey != null && ekey != '' && ekey.indexOf('[mailing_id]') == -1)
		this.setC("emailkey", ekey);
}
function zGetEmailKey() {
	return this.getC("emailkey");
}