var xmlHttp
function ajax(url,args,swich)
{ 
	url=url+'?'+args+'&'+swich
	xmlHttp=GetXmlHttpObject(stateChanged)
	xmlHttp.open("GET", url , true)
    xmlHttp.setRequestHeader("Cache-Control", "no-cache");
    xmlHttp.setRequestHeader("Pragma", "no-cache");
	xmlHttp.send(null);
	DisableEnableForm();
}


function stateChanged() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		EnableEnableForm();
		results = xmlHttp.responseText;
		process_results(results);
		//document.getElementById('content').innerHTML=results;
	} 
	else
	{
		DisableEnableForm();
	}
	
} 




function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null

	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		//alert(navigator.userAgent);
		//alert("This example doesn't work in Opera") 
		//return 
		objXmlHttp=new XMLHttpRequest()
		objXmlHttp.onload=handler
		objXmlHttp.onerror=handler 
		return objXmlHttp
	}
	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 makeObject(){
var x; 
var browser = navigator.appName; 

if(browser == "Microsoft Internet Explorer"){
x = new ActiveXObject("Microsoft.XMLHTTP");
}else{
x = new XMLHttpRequest();

}
return x;
}
function DisableEnableForm(){

  for(j=0;j<document.forms.length;j++)
    {
		  objElems = document.forms[j].elements;
		  for(i=0;i<objElems.length;i++){
			objElems[i].disabled = true;
		  }
	}
}

function EnableEnableForm(){

  for(j=0;j<document.forms.length;j++)
    {
		  objElems = document.forms[j].elements;
		  for(i=0;i<objElems.length;i++){
			objElems[i].disabled = false;
		  }
	}
}