// JavaScript Document

function getHTTPObject() 

{ 

var xmlhttp; 

	/*@cc_on 

		@if (@_jscript_version >= 5) 

		try 

		{ 

			xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); 

		} 

		catch (e) 

		{ 

			try 

			{ 

				xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); 

			} 

			catch (E) 

			{ 

				xmlhttp = false; 

			} 

		} 

		@else 

		xmlhttp = false; 

	@end @*/ 

	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') 

	{ 

		try 

		{ 

			xmlhttp = new XMLHttpRequest(); 

		} 

		catch (e) 

		{ 

			xmlhttp = false; 

		} 

	} 

	return xmlhttp; 

} 

var http = getHTTPObject(); // We create the HTTP Object



function check_username()

{

	 http.open("GET", "http://www.z-soft.ro/function_call.php?fn=check_user&username="+document.form1.username.value, true);

	 http.onreadystatechange = handleCheckUser; 

	 http.send(null);

}



function handleCheckUser() 

{

  if (http.readyState == 4) 

  {

  	results = http.responseXML.documentElement;

	if(results.getElementsByTagName("code")[0].firstChild.data!="0")

	{

		document.getElementById("error_messages").innerHTML = results.getElementsByTagName("message")[0].firstChild.data

	}

	

  }



}