function ajaxFunction(functionName, urlAddress, showLTD)
{
	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)
		{
		    if (functionName == "TContactUs")
		    {
		        if (responseText == "F2")
		        {
		            document.all["msgLabel"].innerHTML="پيام شما با موفقيت ارسال شد";
		            document.all["msgLabel"].style.color="Green";
		        }
		        else if (responseText == "F1")
		        {
		            document.all["msgLabel"].innerHTML="متاسفانه مشکلی در ارسال پيام پيش آمد!";
		            document.all["msgLabel"].style.color="Red";
		        }
		        else if (responseText == "F0")
		        {
		            document.all["msgLabel"].innerHTML="عبارت داخل کادر را اشتباه وارد کرده ايد. دوباره سعی کنيد!";
		            document.all["msgLabel"].style.color="Red";
		        }
		        else if (responseText == "E2")
		        {
		            document.all["msgLabel"].innerHTML="Your Mressage Sent Successfully";
		            document.all["msgLabel"].style.color="Green";
		        }
		        else if (responseText == "E1")
		        {
		            document.all["msgLabel"].innerHTML="There was a problem. Try again please.";
		            document.all["msgLabel"].style.color="Red";
		        }
		        else if (responseText == "E0")
		        {
		            document.all["msgLabel"].innerHTML="You entered text do not match the image. Try again!";
		            document.all["msgLabel"].style.color="Red";
		        }
		    }
		    else
		    {
    			document.all["groupsCenterTD"].innerHTML = xmlHttp.responseText;
	    		if (document.all["leftTD"] != null)
			{
				document.all["leftTD"].style.display = (showLTD == "1") ? "inline" : "none";
		    		if (showLTD == "1")
			    	{
			        	if (document.all["groupsCenterTD"] != null) document.all["groupsCenterTD"].className="groupsCenterTD";
    				}
	    			else
		    		{
			        	if (document.all["groupsCenterTD"] != null) document.all["groupsCenterTD"].className="groupsMainBody";
			    	}
			}
			else
			{
			        if (document.all["groupsCenterTD"] != null) document.all["groupsCenterTD"].className="groupsMainBody";
			}
		    }
		}
		else if (xmlHttp.readyState == 3)
		{
			if (functionName=="fill") document.all["RTD"].innerHTML="<center><img src='http://www.webthinker.net/RayaSchool/Images/Loading.gif'/></center>";
		}
	}

	xmlHttp.open("GET",urlAddress,true);
	xmlHttp.send(null);
}