function onsum(tf)
{
if (tf.loginname.value==""){
alert("请完整输入用户名和密码！");
tf.loginname.focus();
return (false);
}
if (tf.loginpwd.value==""){
alert("请完整输入用户名和密码！");
tf.loginpwd.focus();
return (false);
}
return true;
}
function showFlash(name, width, height) {
str = '';
document.write(str);
}
function showFlash2(name, width, height) {
str = '';
document.write(str);
}