function OnLogin()
{
	if ( (document.getElementById('username').value=="") || (document.getElementById('passwd').value=="") || (document.getElementById('captcha').value==""))
	{
		alert(var_error_login_elements_empty);
	}
	else
	{
		if(window.XMLHttpRequest)
		{
			oRequest = new XMLHttpRequest();
		}
		else if(window.ActiveXObject)
		{
			oRequest = new ActiveXObject("Microsoft.XMLHTTP");
		}
	
		oRequest.open("POST", "module/login.php", true);
		oRequest.onreadystatechange = CheckLogin;
	
		oRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		oRequest.send("strCmd=login&username=" + document.getElementById('username').value + "&passwd=" + document.getElementById('passwd').value + "&img=" + document.getElementById('captcha').value);
	}
}


function CheckLogin()
{
	if(oRequest.readyState == 4)
	{ 
		if(oRequest.status == 200)
		{
			if (oRequest.responseText!="No login errors")
			{
				alert(oRequest.responseText);
			}
			else
			{
				window.location="index.php";
			}
		}
		else
		{
			//alert("Asychronous Error. Please try again...");
		}
	}
}