var xmlHttp;
function loadcities(state)
{ 
	document.getElementById('businessname').length = 0;
	document.getElementById('businessname').options[0] = new Option("--Select--","0");
	xmlHttp=GetXmlHttpObject()

	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	} 
	
	var url = "includes/loadcities.php?state=" + escape(state);
    xmlHttp.open("GET", url, true);
	xmlHttp.onreadystatechange = cityload;
    xmlHttp.send(null);
}

function cityload()
{
	
	if (CheckReadyState(xmlHttp,'cityid'))
	{ 
		document.getElementById('cityid').length = 0;
		document.getElementById('cityid').options[0] = new Option("--Select--","0");
		var	response = xmlHttp.responseXML.documentElement;
		var _data = response.getElementsByTagName('category');
		
		
		if(_data.length == 0)
		{
			document.getElementById('cityid').options[0] = new Option("No City",'0');	
		}
		var i
				
		for ( i = 1 ; i < _data.length ; i ++ )
		{
			document.getElementById('cityid').options[i] = new Option(response.getElementsByTagName('city')[i].firstChild.data,response.getElementsByTagName('city')[i].firstChild.data);
		}
			
	}
}




function loadbusinessnames(city)
{ 
	xmlHttp=GetXmlHttpObject()

	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	} 
	
	var url = "includes/loadbusinessnames.php?city=" + escape(city);
    xmlHttp.open("GET", url, true);
	xmlHttp.onreadystatechange = businessnameload;

    xmlHttp.send(null);
}

function businessnameload()
{
	if (CheckReadyState(xmlHttp,'businessname'))
	{ 
		
		document.getElementById('businessname').length = 0;
		document.getElementById('businessname').options[0] = new Option("--Select--","0");
		var	response = xmlHttp.responseXML.documentElement;
		var _data = response.getElementsByTagName('category');
		
		
		if(_data.length == 0)
		{
			document.getElementById('businessname').options[0] = new Option("No Business",'0');	
		}
		var i
				
		for ( i = 1 ; i < _data.length ; i ++ )
		{
			document.getElementById('businessname').options[i] = new Option(response.getElementsByTagName('businessname')[i].firstChild.data,response.getElementsByTagName('uid')[i].firstChild.data);
		}
	
	
	}
}

function loadstates(categoryid)
{ 
	document.getElementById('cityid').length = 0;
	document.getElementById('cityid').options[0] = new Option("--Select--","0");
	document.getElementById('businessname').length = 0;
	document.getElementById('businessname').options[0] = new Option("--Select--","0");
	xmlHttp=GetXmlHttpObject()

	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	} 
	
	var url = "includes/loadstates.php?categoryid=" + escape(categoryid);
    xmlHttp.open("GET", url, true);
	xmlHttp.onreadystatechange = stateload;

    xmlHttp.send(null);
}

function stateload()
{
	if (CheckReadyState(xmlHttp,'state'))
	{ 
		
		document.getElementById('state').length = 0;
		document.getElementById('state').options[0] = new Option("--Select--","0");
		var	response = xmlHttp.responseXML.documentElement;
		var _data = response.getElementsByTagName('category');
		
		
		if(_data.length == 0)
		{
			document.getElementById('state').options[0] = new Option("No States",'0');	
		}
		var i
				
		for ( i = 1 ; i < _data.length ; i ++ )
		{
			document.getElementById('state').options[i] = new Option(response.getElementsByTagName('state')[i].firstChild.data,response.getElementsByTagName('state')[i].firstChild.data);
		}
	
	
	}
}


function GetXmlHttpObject()
{ 
	var obj;
	if(window.XMLHttpRequest)
	{
		obj = new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		obj = new ActiveXObject("MSXML2.XMLHTTP");
	}
	return obj;
}

function CheckReadyState(obj,listid)
{
	if(obj.readyState < 4) {		
		if(listid=="cityid")
		{
		document.getElementById('cityid').options[0] = new Option("Loading",'0');	
		}
		else if(listid=="state")
		{
		document.getElementById('state').options[0] = new Option("Loading",'0');	
		}
		else if(listid=="businessname")
		{
		document.getElementById('businessname').options[0] = new Option("Loading",'0');	
		}
		
	}
	if(obj.readyState == 4)
	{
		if(obj.status == 200)
		{
			return true;
		}
	}
}