////    ตอน load
var xmlHttp;
function createXMLHttpRequest() 
{
	if (window.ActiveXObject) 
	{
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	} 
	else if (window.XMLHttpRequest) 
	{
		xmlHttp = new XMLHttpRequest();
	}
}

    
function onwork() 
{      
	createXMLHttpRequest();
	xmlHttp.onreadystatechange = handleStateChange_ ;     // call back fuction 
	xmlHttp.open("GET", "proxy.php?id="+ddlzoneID.value   , true);      // GET OR POST 
	xmlHttp.send(null);
}	    
	    
function handleStateChange_() 
{
	if(xmlHttp.readyState == 4) 
	{
		if(xmlHttp.status == 200) 
		{
			var responsezone = xmlHttp.responseText;
		}
	}
}