function check_auth()
{
	var url = "/ajax/auth.php";
	var pars = "op=auth&login=" + $F('login') + "&passw=" + $F('passw');
	new Ajax.Request(url,
	  {
	    parameters: pars,
		onCreate: function(){$('blocker').style.visibility = 'visible';},
		onComplete: function(transport) {
		var text = transport.responseText;
		var json = text.evalJSON();
		if (!json.er)
		{
			new Effect.SwitchOff("auth-wrap");
            if (json.role == 'admin')
            {
			    setTimeout('window.location.href = "/"',1000);
            }
            if (json.role == 'dealer')
            {
                setTimeout('window.location.href = "/own-dealer.php"',1000);
            }
		}
		else
		{
			new Effect.Shake("auth-wrap", {distance:15});
			//alert(json.er_msg);	
		}
		$('blocker').style.visibility = 'hidden';
		}
	  });	
	return false;	
}