var loading = 'درحال بارگزاری ...';
function $() {
  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1) 
      return element;

    elements.push(element);
  }

  return elements;
}

function ajaxtheme(Url)
{
	var xmlHttp;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			document.location = document.location;
		}
    }
	xmlHttp.open("GET",Url,true);
	xmlHttp.send(null);
}

function change_theme(theme)
{
	ajaxtheme('set_theme.php?theme='+theme);
}

function ajaxloader(div,Url)
{
	$(div).style.width = $(div).clientWidth + 'px';
	$(div).style.height = $(div).clientHeight + 'px';
	$(div).innerHTML = loading;
	
	var xmlHttp;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			$(div).style.width = '';
			$(div).style.height = '';
			document.getElementById(div).innerHTML =xmlHttp.responseText;
		}
    }
	xmlHttp.open("GET",Url,true);
	xmlHttp.send(null);
}