function hform_writeError(msg)
{
	if (document.getElementById("hformErrors")==null)
	{
		body=document.getElementsByTagName("body")[0];

		parentElement=document.createElement('fieldset');

		legendElement=document.createElement('legend');
		legendText=document.createTextNode('Form Configuration problems - HForm.com');
		legendElement.appendChild(legendText);
		parentElement.appendChild(legendElement);

		errorElement=document.createElement('p');
		errorElement.id="hformErrors";
		errorElement.style.color="red";

		parentElement.appendChild(errorElement);
		body.insertBefore(parentElement,body.firstChild);
	} else
		errorElement=document.getElementById("hformErrors");
	errorElement.innerHTML=errorElement.innerHTML+msg+"<br>";
	errorElement.style.display='inline';
}



var baseurl;
baseurl="http://www.hform.com";
var hform_prevOnSubmit=null;

function hform_getRequest()
{
	var xmlhttp=false;
	/*@cc_on @*/
	/*@if (@_jscript_version >= 5)
	 try {
	  xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	 } catch (e) {
	  try {
	   xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	  } catch (E) {
	   xmlhttp = false;
	  }
	 }
	@end @*/
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		try {
			xmlhttp = new XMLHttpRequest();
		} catch (e) {
			xmlhttp=false;
		}
	}
	if (!xmlhttp && window.createRequest) {
		try {
			xmlhttp = window.createRequest();
		} catch (e) {
			xmlhttp=false;
		}
	}
	return xmlhttp;
}

function hform_hosted()
{
	xmlhttpNewCode=hform_getRequest();
	xmlhttpNewCode.onreadystatechange = hform_updateRefreshedCode;
	try {
		xmlhttpNewCode.open("GET", baseurl+"/captcha/newcode.cgi?10334765",false);
		xmlhttpNewCode.send(null);
	} 
	catch (e) {
		return false;
	}
	return true;
}

var isHosted=hform_hosted();

function hform_showMessage(msg)
{
		msgElem=document.getElementById("hform_cc_message");
		if (msgElem!=null)
		{
			msgTextElem = document.createElement("span");
			msgTextElem.id="hform_cc_message";
			msgTextElem.innerHTML=msg;
			msgElem.parentNode.replaceChild(msgTextElem,msgElem);
		}
}

function hform_checkCode(event)
{	
	if (hform_prevOnSubmit!=null)
	{
		
		document.getElementById("hform_ccode").form.onsubmit=hform_prevOnSubmit;
		hform_res=document.getElementById("hform_ccode").form.onsubmit();
		document.getElementById("hform_ccode").form.onsubmit=hform_checkCode;
		if (hform_res!=true)
			return hform_res;
	}
	hform_ccode_elem=document.getElementById("hform_ccode");
	hform_cc_message_elem=document.getElementById("hform_cc_message");	
	if (hform_ccode_elem.value=='') {
		hform_cc_message_elem.innerHTML="<font color='red'>* please enter code from picture</font>";
		hform_ccode_elem.style.borderColor="red";
		return false;
	} else
	{		
		xmlhttp=hform_getRequest();
		xmlhttp.onreadystatechange = hform_checkCodeStateChanged;
		xmlhttp.open("GET", baseurl+"/captcha/check.cgi?ckey="+document.getElementById("hform_ckey").value+"&code="+hform_ccode_elem.value,true);
			
		// Execute the request
		try {
			xmlhttp.send(null);
		}
		catch (e) {
			hform_showMessage("<font color='red'>* error checking code, please try again in 1-2 minutes</font>");
			hform_ccode_elem.style.borderColor="red";
			return false;
		}
		

	}
	return false;
}

function hform_checkCodeStateChanged()
{
	hform_ccode_elem=document.getElementById("hform_ccode");
	hform_cc_message_elem=document.getElementById("hform_cc_message");	
	switch (xmlhttp.readyState) {	
		case 1: case 2: case 3:
			hform_showMessage("<font color='gray'>please wait...</font>");
			break;
	
		case 4:
			if (xmlhttp.responseText == "OK")  {
				hform_showMessage("");
				document.getElementById("hform_ccode").form.submit();
				return true;
			} else
			{
				hform_showMessage("<font color='red'>* wrong code, please enter the correct code</font>");
				return false;
			}
			break;
	}	
}

function hform_installCaptchaChecker()
{
	if (isHosted) {
		if (document.getElementById("hform_ccode")!=null)
		{
			if (document.getElementById("hform_ccode").form!=null) {	
				if (document.getElementById("hform_ccode").form.onsubmit!=null)
					hform_prevOnSubmit=document.getElementById("hform_ccode").form.onsubmit;
				else if (document.getElementById("hform_ccode").form.onSubmit!=null) {
					hform_prevOnSubmit=document.getElementById("hform_ccode").form.onSubmit;
					document.getElementById("hform_ccode").form.onSubmit=null;
				}
				document.getElementById("hform_ccode").form.onsubmit=hform_checkCode;
			} else {
				hform_WriteError("Error in CAPTCHA installation: code field is out of form tag");
			}
		} else {
			hform_WriteError("Error in CAPTCHA installation: code field is not found");
		}
	}
}

function hform_refreshCode()
{
	xmlhttpNewCode=hform_getRequest();
	xmlhttpNewCode.onreadystatechange = hform_updateRefreshedCode;
	xmlhttpNewCode.open("GET", baseurl+"/captcha/newcode.cgi?10334765",true);
			
	// Execute the request
	try {
		xmlhttpNewCode.send(null);
	}
	catch (e) {
		hform_showMessage("<font color='red'>* error generating new code, please try again in 1-2 minutes</font>");
		return false;
	}		
}

function hform_updateRefreshedCode()
{
	switch (xmlhttpNewCode.readyState) {	
		case 1: case 2: case 3:
			hform_showMessage("<font color='gray'>please wait...</font>");
			break;
	
		case 4:
			if (xmlhttpNewCode.responseText != "ERROR")  {
				hform_showMessage("");

				hform_newEncodedCode=xmlhttpNewCode.responseText;
				if (document.getElementById("hform_ckey")!=null)
					document.getElementById("hform_ckey").value="10334765-"+hform_newEncodedCode;
				if (document.getElementById("hform_cc_image")!=null) {
					document.getElementById("hform_cc_image").src=baseurl+'/captcha/image.cgi?ckey='+document.getElementById("hform_ckey").value;
				}
				return true;
			} else
			{
				hform_showMessage("<font color='red'>* error refreshing new code, please try again in 1-2 minutres</font>");
				return false;
			}
			break;
	}	
}		



function hform_showCodeImage()
{
	document.write('<span id="hform_cc_div" style="display: inline">Please enter the following code:\n');
	document.write('<br><img id="hform_cc_image" name="hform_cc_image" src="'+baseurl+'/captcha/image.cgi?ckey=10334765-E2939E16999D1D4F7AF703E27A6BEF0ADCD6F5150D749D73" style="margin:0;padding:0;vertical-align: bottom;" border="0">\n');
	document.write('<input type="hidden" id="hform_ckey" name="hform_ckey" value="10334765-E2939E16999D1D4F7AF703E27A6BEF0ADCD6F5150D749D73" />\n');
	if (isHosted)
	{
		document.write('<br><span id="hform_cc_hint" style="font-size:80%"><a href="javascript:hform_refreshCode()">Can\'t read the code? Try another one</a></span>\n');
	}
	if (document.getElementById("hform_cc_image").src != baseurl+'/captcha/image.cgi?ckey='+document.getElementById("hform_ckey").value)
		document.getElementById("hform_cc_image").src=baseurl+'/captcha/image.cgi?ckey='+document.getElementById("hform_ckey").value;
	document.write('<br><input type="text" name="hform_ccode" id="hform_ccode" style="margin:0;padding:0;width:7em;"  maxlength="6" value="" />\n');
	document.write('<span id="hform_cc_message"></span>\n');
	document.write('</span>\n');
}	

function hform_captcha()
{
	hform_showCodeImage();
	hform_installCaptchaChecker();
}