var divid = 'content';
var loadingmessage = "<center>لطفا صبر کنید.<br><img border='0' src='images/load.gif'></center>";

function AJAX(){

var xmlHttp;
try{
xmlHttp=new XMLHttpRequest(); // Firefox, Opera 8.0+, Safari
return xmlHttp;
}
catch (e){
try{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); // Internet Explorer
return xmlHttp;
}
catch (e){
try{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
return xmlHttp;
}
catch (e){
alert("Your browser does not support AJAX!");
return false;
}
}
}

}

function formget(f, url) {

var poststr = getFormValues(f);
postData(url, poststr);

}

function postData(url, parameters){

var xmlHttp = AJAX();

xmlHttp.onreadystatechange =  function(){

if(xmlHttp.readyState > 0 && xmlHttp.readyState < 4){
document.getElementById('content').innerHTML = loadingmessage
}
if (xmlHttp.readyState == 4) {

document.getElementById('content').innerHTML = xmlHttp.responseText

}


}

xmlHttp.open("POST", url, true);
xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlHttp.setRequestHeader("Content-length", parameters.length);
xmlHttp.setRequestHeader("Connection", "close");
xmlHttp.send(parameters);



}

function getFormValues(fobj)

{
var str = "";
var valueArr = null;
var val = "";
var cmd = "";

for(var i = 0;i < fobj.elements.length;i++)

{

if ((fobj.elements[i].type=="radio"))
{



if (fobj.elements[i].checked)
{
str += fobj.elements[i].name +
"=" + escape(fobj.elements[i].value) + "&";
}

}
else
{

str += fobj.elements[i].name +
"=" + escape(fobj.elements[i].value) + "&";


}

}

str = str.substr(0,(str.length - 1));
//document.write(str );
return str;

}


var xmlHttp;
function createRequest(){ 
if(window.ActiveXObject){ 
	xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); 
} else if(window.XMLHttpRequest){  
	xmlHttp = new XMLHttpRequest(); 
} 
} 


function page(url){ 
createRequest();
xmlHttp.open("GET", url, true); 
xmlHttp.onreadystatechange = updatepage; 
xmlHttp.send(null); 
}

function updatepage(){
	document.getElementById('content').innerHTML = loadingmessage
	if(xmlHttp.readyState == 4){
		document.getElementById('content').innerHTML = xmlHttp.responseText
	}
}