<!-- 
function login () {
	var submitForm = document.forms["submitForm"];
	if (submitForm.elements['username'].value == "") {
		alert("Please enter your username.");
		return false;
	}
	if (submitForm.elements['password'].value == "") {
		alert("Please enter your password.");
		return false;
	}
	if (submitForm.elements['username'].value != "" && submitForm.elements['password'].value != "") {
		submitForm.elements['password'].value = hex_md5(submitForm.elements['challenge'].value + submitForm.elements['password'].value);
		submitForm.submit();
	}
}
//-->