// JavaScript Document
var xmlHttp
function getCity(str)
{	
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	}
	var url="cityajax.php?p="+str
	xmlHttp.onreadystatechange=CityNames
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}
function CityNames() 
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
		var Response = xmlHttp.responseText;				
		if(Response == '<input name="city" type="text" id="city"/>')
		   document.getElementById("div_city").innerHTML = Response;		
		else
		 document.getElementById("div_city").innerHTML = "<select name='city' id='city'>" + Response + "</select>" ;			
	}
}

/****************************************************************************************/
function GetXmlHttpObject()
{
	var xmlHttp=null;
	try{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e){
		// Internet Explorer
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e){
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}
/****************************************************************************************/