function check_login(){
	ajax.exec(folder_root+'ajax/',{'login':document.getElementById('username').value,'password':document.getElementById('password').value, 'type':'is_login'},checkLoginMsg);
	return false;
}


function checkLoginMsg(xmlDoc){
	xmlDoc=this.responseXML.documentElement;
	var msg=xmlDoc.getElementsByTagName("msg")[0].childNodes[0].nodeValue;
	var status=xmlDoc.getElementsByTagName("status")[0].childNodes[0].nodeValue;
	document.getElementById('incorrect_login').innerHTML=' '+msg;

	if(status==1){
		document.getElementById('incorrect_login').style.color = 'red';
		document.getElementById('incorrect_login').style.display = 'block';
	} else {
		document.getElementById('incorrect_login').style.display = 'none';
		document.forms['login'].submit();
	}
}