var base_url='/glms/index.php';

function checkform() {
	if(isEmpty(document.getElementById("username"),'User Name','login_error_message')){
		document.getElementById("login_error_message").style.display='block';
		document.getElementById("login_error_message").innerHTML = 'User Login cannot be blank';
		return false;
	}
	if(isEmpty(document.getElementById("password"),'Password','login_error_message')){
		document.getElementById("login_error_message").style.display='block';
		document.getElementById("login_error_message").innerHTML = 'Password cannot be blank';
		return false;
	}
	new Ajax.Updater('login_error_message',base_url+'/login', {postBody: 'username='+document.getElementById("username").value+'&password='+document.getElementById("password").value, onComplete:showAlert});
	return false;
}

function showAlert(response){
	var retMsg = response.responseText;
	if(retMsg == "success"){
		document.getElementById("login_error_message").style.display='none';
		document.getElementById("login_error_message").innerHTML = "";
		window.location.href='/glms/';
	}else{
		document.getElementById("login_error_message").style.display='block';
		document.getElementById("login_error_message").innerHTML = retMsg;
	}
}