function submitLoginForm(f){
	if(isEmpty(f.userName)){alert("Please enter username!");f.userName.focus();return false;}
	if(isEmpty(f.userPass)){alert("Please enter password!");f.userPass.focus();return false;}
	f.response.value = hex_md5(f.userPass.value);
}


function loginOnWindowOnload() {
	$('#userName').focus(
		function() {
			var uname = $.trim($('#userName').attr('value'));
			if ($.trim(uname) == 'Username') {
				$('#userName').attr('value','');
			}
		}
	);
	$('#userName').blur(
		function() {
			if (typeof($('#userName').attr('value')) == 'undefined' || $.trim($('#userName').attr('value')) == '') {
				$('#userName').attr('value','Username');
			}
		}
	);
	$('#userPass').focus(
		function() {
			var uname = $.trim($('#userPass').attr('value'));
			if ($.trim(uname) == '******') {
				$('#userPass').attr('value','');
			}
		}
	);
	$('#userPass').blur(
		function() {
			if (typeof($('#userPass').attr('value')) == 'undefined' || $.trim($('#userPass').attr('value')) == '') {
				$('#userPass').attr('value','******');
			}
		}
	);
}
//addEvent(window,'load',loginOnWindowOnload,false);