function validateForm(frm)
	{
	  var msg = '';
		var valid_email = '';
		var len = 0;
		
		/* Tell the user all at once about any missing data */
    len = document.login.username.value.length;
 		if (!len)
			msg += 'Enter your username.\n';


    len = document.login.pw.value.length;	
		if (!len)
			msg += 'Enter your password.\n';
		if (msg != '')
		{
			var err_msg = 'Please correct the following information.\n';
			err_msg += msg;
			alert(err_msg);
			return false;
		}
	
		return true;
	}