function createRequestObject()
{
	var req;
	if (window.XMLHttpRequest)
	{
		req = new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		try
		{
			req = new ActiveXObject('Msxml2.XMLXTTP');
		}
		catch(err)
		{
			req = new ActiveXObject('Microsoft.XMLHTTP');
		}
	}
	return req;
}

//shouldn't use global variable, because we will have multiple functions trying to use it
//var http = createRequestObject(); 

function ajaxSubConfiguration(option_id, selected_item_id, quantity)
{
	var http = createRequestObject();

	var status_cage = "status_cage"+option_id;
	var message = "Please wait, checking for more options...";

	try
	{
		document.getElementById(status_cage).innerHTML = message;
	}
	catch (e)
	{
		var wrapper = document.createElement('div');
		wrapper.innerHTML = message;
		document.getElementById(status_cage).innerHTML = "";
		document.getElementById(status_cage).appendChild(wrapper);
	}

	http.open('get', '/scripts/site/site_configure.php?action=sub_configuration&option_id='+option_id+'&selected_item_id='+selected_item_id+'&qty='+quantity);
	http.onreadystatechange = function() {
		if (http.readyState == 4)
		{
			if (http.status == 200)
			{	
				var response = http.responseText;
				var results;

//				alert('response: '+response);

				results = response.split("#cage#");

				if (results && results.length == 2 && results[0] != "")
				{
					try
					{
						document.getElementById(results[0]).innerHTML = results[1];
						document.getElementById(status_cage).innerHTML = "";
					}
					catch (e)
					{
						var wrapper = document.createElement('div');
						wrapper.innerHTML = results[1];
						document.getElementById(results[0]).innerHTML = "";
						document.getElementById(results[0]).appendChild(wrapper);

						wrapper.innerHTML = "";
						document.getElementById(status_cage).innerHTML = "";
						document.getElementById(status_cage).appendChild(wrapper);

					}
				}
			}
		}
	}
	http.send(null);
}

function ajaxConfigureSubConfiguration(parent_component_id, parent_option_id, parent_choice_id)
{
	var http = createRequestObject();

	var form_name = "configure";
	var data = "";
	var match;

	for (i=0; i<(document.forms[form_name].elements.length-1); i++)
	{
		match = document.forms[form_name].elements[i].name.search('option');
		if (match != -1)
		{
			data += document.forms[form_name].elements[i].name+"_"+document.forms[form_name].elements[i].value;
			if (i+2 < document.forms[form_name].elements.length)
			{
				data += "*";
			}
		}
		match = document.forms[form_name].elements[i].name.search('final');
		if (match != -1)
		{
			data += document.forms[form_name].elements[i].name+"_"+document.forms[form_name].elements[i].value;
			if (i+2 < document.forms[form_name].elements.length)
			{
				data += "*";
			}
		}		
	}

//	alert(data);

	http.open('get', '/scripts/site/site_configure.php?action=configure&component_id='+parent_component_id+'&parent_option_id='+parent_option_id+'&parent_choice_id='+parent_choice_id+'&data='+data);
	http.onreadystatechange = function() {
		if (http.readyState == 4)
		{
			if (http.status == 200)
			{	
				var response = http.responseText;
				var half;
				var first_results;
				var second_results;
		
//				alert('response: '+response);

				half = response.split("#cage2#");
				if (half.length == 2)
				{
				//	alert('half: '+half[0]);
				//	alert('half: '+half[1]);
					first_results = half[0].split("#cage#");
					second_results = half[1].split("#cage#");
				}
				else
				{
					first_results = response.split("#cage#");
				}
				if (first_results && first_results.length == 2 && first_results[0] != "")
				{
					//alert('first div: '+first_results[0]);
					//alert('first data: '+first_results[1]);					
					document.getElementById(first_results[0]).innerHTML = first_results[1];
				}
				if (second_results && second_results.length == 2 && second_results[0] != "")
				{
					//alert('second div: '+second_results[0]);
					//alert('second data: '+second_results[1]);
					document.getElementById(second_results[0]).innerHTML = second_results[1];
				}
			}
		}
	}
	http.send(null);
}

function ajaxResetConfiguration(option_id)
{
	var http = createRequestObject();

	http.open('get', '/scripts/site/site_configure.php?action=reset_configuration&option_id='+option_id);
	http.onreadystatechange = function() {
		if (http.readyState == 4)
		{
			if (http.status == 200)
			{	
				var response = http.responseText;
				var results;

	//			alert('response: '+response);

				results = response.split("#cage#");

				if (results && results.length == 2 && results[0] != "")
				{
					try
					{
						document.getElementById(results[0]).innerHTML = results[1];
					}
					catch (e)
					{
						var wrapper = document.createElement('div');
						wrapper.innerHTML = results[1];
						document.getElementById(results[0]).innerHTML = "";
						document.getElementById(results[0]).appendChild(wrapper);
					}
				}
			}
		}
	}
	http.send(null);
}