// declare a global  XMLHTTP Request object
var XmlHttpObj;

// create an instance of XMLHTTPRequest Object, varies with browser type, try for IE first then Mozilla
function CreateXmlHttpObj()
{
	// try creating for IE (note: we don't know the user's browser type here, just attempting IE first.)
	try
	{
		XmlHttpObj = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch(e)
	{
		try
		{
			XmlHttpObj = new ActiveXObject("Microsoft.XMLHTTP");
		} 
		catch(oc)
		{
			XmlHttpObj = null;
		}
	}
	// if unable to create using IE specific code then try creating for Mozilla (FireFox) 
	if(!XmlHttpObj && typeof XMLHttpRequest != "undefined") 
	{
		XmlHttpObj = new XMLHttpRequest();
	}
}

// called from onChange or onClick event of the make dropdown list
function makeOnChange() 
{
    var make = document.getElementById("make");
    
    // get selected make from dropdown list
    var selectedmake = make.options[make.selectedIndex].value;
    
    // url of page that will send xml data back to client browser
    var requestUrl;
    // use the following line if using asp
    //requestUrl = "xml_data_provider.asp" + "?filter=" + encodeURIComponent(selectedmake);
    // use the following line if using php
     requestUrl = "xml_data_provider2.php" + "?filter=" + encodeURIComponent(selectedmake);
    
	CreateXmlHttpObj();
	
	// verify XmlHttpObj variable was successfully initialized
	if(XmlHttpObj)
	{
        // assign the StateChangeHandler function ( defined below in this file)
        // to be called when the state of the XmlHttpObj changes
        // receiving data back from the server is one such change
		XmlHttpObj.onreadystatechange = StateChangeHandler;
		
		// define the iteraction with the server -- true for as asynchronous.
		XmlHttpObj.open("GET", requestUrl,  true);
		
		// send request to server, null arg  when using "GET"
		XmlHttpObj.send(null);		
	}
}


// this function called when state of  XmlHttpObj changes
// we're interested in the state that indicates data has been
// received from the server
function StateChangeHandler()
{
	// state ==4 indicates receiving response data from server is completed
	if(XmlHttpObj.readyState == 4)
	{
		// To make sure valid response is received from the server, 200 means response received is OK
		if(XmlHttpObj.status == 200)
		{			
			Populatemodel(XmlHttpObj.responseXML.documentElement);
		}
		else
		{
			alert("problem retrieving data from the server, status code: "  + XmlHttpObj.status);
		}
	}
}

// populate the contents of the model dropdown list
function Populatemodel(modelNode)
{
    var model = document.getElementById("model");
    var count = 0;
	// clear the model list 
	for (count = model.options.length-1; count >-1; count--)
	{
		model.options[count] = null;
	}

	var modelNodes = modelNode.getElementsByTagName('model');
	var idValue;
	var textValue; 
	var optionItem;
	// populate the dropdown list with data from the xml doc
	for (count = 0; count < modelNodes.length; count++)
	{
   		textValue = GetInnerText(modelNodes[count]);
		idValue = modelNodes[count].getAttribute("id");
		optionItem = new Option( textValue, idValue,  false, false);
		model.options[model.length] = optionItem;
	}
	if (count > 1) {
		model.disabled=false;}
	else {
		model.disabled=true;}
}

// returns the node text value 
function GetInnerText (node)
{
	 return (node.textContent || node.innerText || node.text) ;
}


//Function for search navigation
function getpage(page)
{
	document.psearch.page.value = page ;
	document.psearch.submit() ;
}

function openwindow(name)
{


switch (name)
{
	case "user": 
		window.open("user_details.php", "Window1", "width=650,height=600,scrollbars=no"); 
		break;
	case "chgpwd": 
		window.open("user_chgpwd.php", "Window2", "width=650,height=500,scrollbars=no"); 
		break;
	case "registration": 
		window.open("user_register.php", "Window3", "width=600,height=750,scrollbars=yes"); 
		break;
	case "edit": 
		window.open("user_edit.php", "Window4", "width=750,height=700,scrollbars=yes"); 
		break;
	case "forgot": 
		window.open("user_forgot.php", "Window5", "width=600,height=450,scrollbars=no"); 
		break;
	default : 
		alert("No window has been defined for this link");
}

}


function popupVehicle(vehicle)
{


	newwindow=window.open(vehicle, "Window6", "width=610,height=650,scrollbars=yes"); 
	if (window.focus) {newwindow.focus()}

}

function popupVehicleNew(vehicle)
{


	newwindow=window.open(vehicle, "Window6", "width=900,height=1000,scrollbars=yes"); 
	if (window.focus) {newwindow.focus()}

}

function popupCalculator(vehicle)
{
	window.open(vehicle, "Window11", "width=775,height=400,scrollbars=no"); 
}