function jg_change_image(img2change,state){
	document.images[img2change].src = eval(img2change + state + '.src');
}

function jg_go_page(url){
	url = thisDocRoot + url;
	eval("parent"+".location="+"'"+url+"'");
}

function jg_send(){
	// validation
	var nonValid = false;
	
	var nameField = document.getElementById('emailNameField');
	var emailField = document.getElementById('emailEmailField');
	var subjectField = document.getElementById('emailSubjectField');
	var captchaField = document.getElementById('captchaInputField');
	
	// reset the red text each time so
	jg_change_class(nameField.id,'emailItemInput');
	jg_change_class(emailField.id,'emailItemInput');
	jg_change_class(subjectField.id,'emailItemInput');
	jg_change_class(captchaField.id,'captchaInput');
	
	if (nameField.value == "" || nameField.value == "<enter your name here>" || nameField.value == "<Must Enter a Name>")
	{
		nonValid = true;
		jg_change_class(nameField.id,'emailItemInputRed');
		nameField.value = "<Must Enter a Name>";
	}
	if (emailField.value == "" || emailField.value == "<enter your email address here>" || emailField.value == "<Must Enter a Valid Email>" || emailField.value.search(/\@/i)==-1 || emailField.value.search(/\./i)==-1)
	{
		nonValid = true;
		jg_change_class(emailField.id,'emailItemInputRed');
		emailField.value = "<Must Enter a Valid Email>";
	}
	if (subjectField.value == "" || subjectField.value == "<enter subject here>" || subjectField.value == "<Must Enter a Subject>")
	{
		nonValid = true;
		jg_change_class(subjectField.id,'emailItemInputRed');
		subjectField.value = "<Must Enter a Subject>";
	}
	if (captchaField.value == "" || captchaField.value == "<????>")
	{
		nonValid = true;
		jg_change_class(captchaField.id,'captchaInputRed');
		captchaField.value = "<????>";
	}
	// process validation and act
	if(nonValid == true)
	{
		jg_toggle_layer_vis(document.getElementById("sendStatus").id,'visible');
		document.getElementById("sendStatusText").innerHTML = "STOPPED<br />Items On The Form in Red Need Correcting<br /><br />Click OK To Continue";
	}
	else
	{
		// working graphic on
		jg_toggle_layer_vis(document.getElementById("loadingGraphic").id,'visible');
		// set the class back to normal - otherwise will remain red
		jg_change_class(nameField.id,'emailItemInput');
		jg_change_class(emailField.id,'emailItemInput');
		jg_change_class(subjectField.id,'emailItemInput');
		jg_change_class(captchaField.id,'captchaInput');
		var parameters = nameField.id + "=" + encodeURI(nameField.value) + "&" + emailField.id + "=" + encodeURI(emailField.value) + "&" + subjectField.id + "=" + encodeURI(subjectField.value) + "&" + document.getElementById("emailBodyField").id + "=" + encodeURI(document.getElementById("emailBodyField").value) + "&" + captchaField.id + "=" + captchaField.value + "&scriptCheck=ok";
		// send
		jg_init_send('scripts/emailsend.asp',parameters);
		//document.getElementById("eForm").submit(); //debug option - send normal form data
	}
}

function jg_toggle_layer_vis(layerid,toggle){
	var layertotoggle =document.getElementById(layerid).style;//load the layers style into var
	layertotoggle.visibility = toggle;
}

function jg_change_class(change_what,to_class){
	id_to_change = document.getElementById(change_what);
	id_to_change.className = to_class;
}

function jg_init_send(url,parameters) { //creates a http req instance and posts form data to script
	var http_request = false;

	if (window.XMLHttpRequest)
	{ // create xmlhttpreq if not IE
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType)
		{
			http_request.overrideMimeType('text/xml'); // for firefox to overide sent header mime type - may cause errors if file called is not xml - i.e plain text - still seems to work though
		}
	}
	else if (window.ActiveXObject)
	{ // else then create xmlhttpreq for IE
		try
		{
			http_request = new ActiveXObject("Msxml2.XMLHTTP"); // try first type on fail try second type
		}
		catch (e)
		{
			try
			{
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {} // if neither do nothing
		}
	}

	if (!http_request) // check to see if instance created
	{
		alert('It Appears Your Browser Cannot Support HttpRequest As Required');
		return false;
	}
	else
	{
		// or proceed with call
		http_request.onreadystatechange = function() { jg_script_return(http_request); }; // on complete load run dummy function to call real function with param of results
		http_request.open('POST', url , true); //post data async
		http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		//http_request.setRequestHeader("Content-length", parameters.length);
		//http_request.setRequestHeader("Connection", "close");
		http_request.send(parameters);
	}

}

function jg_script_return(http_request) { // function called on load

	try // put it into a test case - if no access to server etc then does not crash
	{
		if (http_request.readyState == 4) // if finished loading
		{
			if (http_request.status == 200) // if successful load
			{
				// working graphic off
				jg_toggle_layer_vis(document.getElementById("loadingGraphic").id,'hidden');
				//alert(http_request.responseText); //debug option to show all response data - if set to display in emailsend.asp
				if (http_request.responseText=="Sent")
				{
					jg_toggle_layer_vis(document.getElementById("sendStatus").id,'visible');
					document.getElementById("sendStatusText").innerHTML = "Thank You<br />Your Email Has Been Sent<br /><br />Click OK To Continue";
					document.getElementById('emailNameField').value = "<enter your name here>";
					document.getElementById('emailEmailField').value = "<enter your email address here>";
					document.getElementById('emailSubjectField').value = "<enter subject here>";
					document.getElementById('emailBodyField').value = "<enter your message here>";
					document.getElementById('captchaInputField').value = "";
					
				}
				else
				{
					jg_toggle_layer_vis(document.getElementById("sendStatus").id,'visible');
					document.getElementById("sendStatusText").innerHTML = "Your Email FAILED To Send<br />Check You Entered The Characters As Shown<br /><br />Click OK To Continue";
				}
			}
			else
			{
				// working graphic off
				jg_toggle_layer_vis(document.getElementById("loadingGraphic").id,'hidden');
				alert('There was a problem with the request.'); // data not loaded (404 etc)
			}
		}
	}
	catch( e )
	{
		// working graphic off
		jg_toggle_layer_vis(document.getElementById("loadingGraphic").id,'hidden');
		alert('Caught Exception: ' + e.description + ' Cannot Continue'); // if test case fails
	}

}