//login
function DoLogin (failedResponse)
{	
	//perform login		
	var httpDoLogin = createRequestObject();
	var userName=document.getElementById ('username').value;
	var password=document.getElementById ('password').value;
	password = hex_md5 (password);
	params = 'username='+userName+'&password='+password;		
	httpDoLogin.open('GET','actions/DoLogin.php?'+params);
	
	httpDoLogin.onreadystatechange = function()
	{
		if(httpDoLogin.readyState == 4)
		{
	   		response = httpDoLogin.responseText;
	   		if (response == 1)
	   		{
	   			parent.location.reload();
	   		}
	   		else
	   		{
	   			document.getElementById('modalFormResponse').innerHTML = failedResponse;	
	   		}
    	}   	
	}
	httpDoLogin.send(null);	
}

//logout
function DoLogout ()
{	
	var httpDoLogout = createRequestObject();
	httpDoLogout.open('GET','/actions/DoLogout.php',false);	
	httpDoLogout.onreadystatechange = function()
	{
		if(httpDoLogout.readyState == 4)
		{	   		
	   		window.location.reload();
    	}   	
	}
	httpDoLogout.send(null);	
}