// ****************************************************************************
function getFileExtension(inputID)
{
var fileinput = document.getElementById(inputID);

if (!fileinput)
	return "";

var filename = fileinput.value;

if (filename.length == 0)
	return "";

var dot = filename.lastIndexOf(".");

if (dot == -1)
	return "";

var extension = filename.substr(dot, filename.length);

return extension;
}
// ****************************************************************************
function doLogin()
{

if (document.login_form.username.value == "")
	{
	alert("The username must be provided!");
	document.login_form.username.focus();
	return;
	}

if (document.login_form.password.value == "")
	{
	alert("The password must be provided!");
	document.login_form.password.focus();
	return;
	}

document.login_form.submit();
}
// ****************************************************************************