function getCookie(cookieName) 
	{
		var cookieString=""+document.cookie;

		var index1=cookieString.indexOf(cookieName + '=');
		
		if (index1==-1 || cookieName=="") 
			return ""; 
		var index2=cookieString.indexOf(';',index1);

		if (index2==-1) 
			index2=cookieString.length; 

		return unescape(cookieString.substring(index1+cookieName.length+1,index2));
	}

	function setCookie(name, value) 
	{
		cookieString = name + "=" + escape(value) + ";EXPIRES=-1";
		document.cookie=cookieString;

		if (getCookie(name))
			return false;
		else
			return true;
	}

	function showPdf()
	{
		document.getElementById('PDFGen').value = 1;
		document.getElementById('CalcForm').target = '_blank';
		document.getElementById('CalcForm').submit();
		document.getElementById('CalcForm').target = '';
		document.getElementById('PDFGen').value = 0;
	}

	function sendPdfOnOff(isSetManually)
	{
		pdfEmailCtrl        = document.getElementById('PDFEmail');
		pdfEmailToCtrl      = document.getElementById('PDFEmailTo');
		pdfEmailNameCtrl    = document.getElementById('PDFEmailName');
		pdfEmailPhoneCtrl   = document.getElementById('PDFEmailPhone');
		
		pdfEmailToCtrl.disabled = !pdfEmailCtrl.checked;
		pdfEmailNameCtrl.disabled = !pdfEmailCtrl.checked;
		pdfEmailPhoneCtrl.disabled = !pdfEmailCtrl.checked;
		
		if (pdfEmailCtrl.checked && isSetManually)
			pdfEmailToCtrl.focus();
	}
	
	function saveFormChanges()
	{
		pdfEmailCtrl      = document.getElementById('PDFEmail');
		pdfEmailToCtrl      = document.getElementById('PDFEmailTo');
		pdfEmailNameCtrl    = document.getElementById('PDFEmailName');
		pdfEmailPhoneCtrl   = document.getElementById('PDFEmailPhone');
		
		if (pdfEmailToCtrl != null)
		{
			setCookie('pdfEmail', pdfEmailCtrl.checked);
			setCookie('pdfEmailTo', pdfEmailToCtrl.value);
			setCookie('pdfEmailName', pdfEmailNameCtrl.value);
			setCookie('pdfEmailPhone', pdfEmailPhoneCtrl.value);

			/*if (pdfEmailNameCtrl.value.length == 0)
			{
				alert('Your name must not be empty');
				pdfEmailNameCtrl.focus();
				
				return false;
			}*/
			
			if (pdfEmailCtrl.checked == true && pdfEmailToCtrl.value.length == 0)
			{
				alert('E-mail address must not be empty');
				pdfEmailToCtrl.focus();
				
				return false;
			}
		
			/*if (pdfEmailPhoneCtrl.value.length == 0)
			{
				alert('Phone number must not be empty');
				pdfEmailPhoneCtrl.focus();
				
				return;
			}*/
		
			document.getElementById('PDFEmail').value = 1;
			document.getElementById('CalcForm').submit();
			document.getElementById('CalcForm').target = '';
			document.getElementById('PDFEmail').value = 0;
		}
	}
	
	function setEmailOptions()
	{
		pdfEmailCtrl        = document.getElementById('PDFEmail');
		pdfEmailToCtrl      = document.getElementById('PDFEmailTo');
		pdfEmailNameCtrl    = document.getElementById('PDFEmailName');
		pdfEmailPhoneCtrl   = document.getElementById('PDFEmailPhone');
		
		if (pdfEmailCtrl != null)
			pdfEmailCtrl.checked = (getCookie('pdfEmail') == 'true') ? 1 : 0;
		
		if (pdfEmailToCtrl != null)
			pdfEmailToCtrl.value = getCookie('pdfEmailTo');

		if (pdfEmailPhoneCtrl != null)
			pdfEmailPhoneCtrl.value = getCookie('pdfEmailPhone');
			
		if (pdfEmailNameCtrl != null)
			pdfEmailNameCtrl.value = getCookie('pdfEmailName');
			
		sendPdfOnOff(false);			
	}
	
	function switchToPlainEnglish()
	{
		var analysisDiv = document.getElementById('analysisDiv');
		var englishDiv = document.getElementById('plainEnglishDiv');

		analysisDiv.style.display = 'none';
		englishDiv.style.display = 'inline';

		setCookie('CalcHelp', 2);
	}

	function switchToAnalysis()
	{
		var analysisDiv = document.getElementById('analysisDiv');
		var englishDiv = document.getElementById('plainEnglishDiv');

		analysisDiv.style.display = 'inline';
		englishDiv.style.display = 'none';

		//setCookie('CalcHelp', 1);
	}