var xmlHttp;
var type;

function save_cart(url)
{ 
	xmlHttp=GetXmlHttpObject(state_change);
	xmlHttp.open("GET", url , true)
	xmlHttp.send()
} 

function process(url, form_object)
{ 
	if(form_object) var str= get_form_values(form_object);
	xmlHttp=GetXmlHttpObject(state_change);
	xmlHttp.open("POST", url , true)
	xmlHttp.send(str)
} 
function state_change() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById('result').innerHTML=xmlHttp.responseText;
	} 
} 
function update_model(path, val)
{ 
	var url=path + "lib/ajax/update_model.php?make=" + val;
	xmlHttp=GetXmlHttpObject(state_change_update_model);
	xmlHttp.open("GET", url , true)
	xmlHttp.send(null)
} 
function state_change_update_model() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById('_model').innerHTML='';
		document.getElementById('_model').innerHTML=xmlHttp.responseText;
	} 
} 
function update_model1(path, val, type_num, name)
{ 
	var url=path + "lib/ajax/update_model.php?make=" + val + "&name=" + name;
	type = type_num;
	xmlHttp=GetXmlHttpObject(state_change_update_model1);
	xmlHttp.open("GET", url , true)
	xmlHttp.send(null)
} 
function state_change_update_model1() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(type){
			document.getElementById('_model'+type).innerHTML='';
			document.getElementById('_model'+type).innerHTML=xmlHttp.responseText;
		}
		else{
			document.getElementById('_model').innerHTML='';
			document.getElementById('_model').innerHTML=xmlHttp.responseText;
		}
	} 
} 

function update_printer(path, val)
{ 
	var url=path + "lib/ajax/update_printer.php?printer_seq=" + val;
	xmlHttp=GetXmlHttpObject(state_change_update_printer);
	xmlHttp.open("GET", url , true)
	xmlHttp.send(null)
} 
function state_change_update_printer() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById('_printer').innerHTML='';
		document.getElementById('_printer').innerHTML=xmlHttp.responseText;
	} 
} 


function validate_email(path, val)
{ 
	var url=path + "lib/ajax/validate.php?type=email&val=" + val;
	xmlHttp=GetXmlHttpObject(state_change_validate_email);
	xmlHttp.open("GET", url , true)
	xmlHttp.send(null)
} 
function state_change_validate_email() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(xmlHttp.responseText=='valid'){
			alert('Email is valid');
			document.getElementById('valid').value='1';
		}
		else{
			alert('Email already exists.  Please choose different Email');
			document.getElementById('email').value='';
			document.getElementById('email').focus();
		}
	} 
} 


function validate_aspace(path, val)
{ 
	var url=path + "lib/ajax/validate.php?type=aspace&val=" + val;
	xmlHttp=GetXmlHttpObject(state_change_validate_aspace);
	xmlHttp.open("GET", url , true)
	xmlHttp.send(null)
} 
function state_change_validate_aspace() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(xmlHttp.responseText=='valid') alert('Aspace URL is valid');
		else{
			alert('Aspace URL already exists.  Please choose different Aspace URL');
			document.getElementById('aspace').value='';
			document.getElementById('aspace').focus();
		}
	} 
} 

function validate_id(path, id)
{ 
	var url=path + "lib/ajax/validate_id.php?uid=" + id;
	xmlHttp=GetXmlHttpObject(state_change_validate);
	xmlHttp.open("GET", url , true)
	xmlHttp.send(null)
} 
function state_change_validate() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(xmlHttp.responseText=='valid') alert('User ID is valid');
		else{
			alert('ID already exists.  Please choose different ID');
			document.getElementById('user_id').value='';
			document.getElementById('user_id').focus();
		}
	} 
} 
function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null
	
	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		alert("This example doesn't work in Opera") 
		return 
	}
	if (navigator.userAgent.indexOf("MSIE")>=0)
	{ 
		var strName="Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
	{
		strName="Microsoft.XMLHTTP"
	} 
	try
	{ 
		objXmlHttp=new ActiveXObject(strName)
		objXmlHttp.onreadystatechange=handler 
		return objXmlHttp
	} 
	catch(e)
	{ 
		alert("Error. Scripting for ActiveX might be disabled") 
		return 
	} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		objXmlHttp=new XMLHttpRequest()
		objXmlHttp.onload=handler
		objXmlHttp.onerror=handler 
		return objXmlHttp
	}
} 
function get_form_values(obj){
	var str='';
	for(var i=0; i<obj.elements.length; i++){
		str += obj.element[i].name + "=" + escape(obj.elements[i].value) + '&';
	}
	return str;
}