Entri Buku dan Validasinya

@html>
@head>
@title>Entri Data Buku@/title>
@meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
@Script type="text/JavaScript" src=ajax1mhs.js>@/script>

(di bawah ini script validasi!!!!)

@script language="javascript">
@!--
function trim(str)
{
return str.replace(/^\s+|\s+$/g,'');
}
function validasi()
{
var ckode_buku, cjudul;
with(window.document.fbuku)
{
ckode_buku = textkode_buku;
cjudul = textjudul;
}
if(trim(ckode_buku.value)=='')
{
alert('Silakan isi dulu kode buku');
ckode_buku.focus();
return false;
}
else
if(trim(cjudul.value)=='')
{
alert('Silakan isi terlebih dahulu judul buku');
cjudul.focus();
return false;
}
else
{
ckode_buku.value = trim(ckode_buku.value);
cjudul.value = trim(cjudul.value);
}
}
//-->

@/script>
@/head>
@/head>


@body>
@form name=fbuku onsubmit="validasi();" action= "simpan_buku.php" method= "POST">
@center>
@h3>ENTRI BUKU@/h3>
@table>
@tr>@td>Kode Buku@/td>@td>:@/td>
@td>@input type=text name="kode_buku" size=6 maxlength=6>@input type=button value=? OnClick='lihat_mahasiswa(kode_buku.value);'>@/td>
@/tr>

@tr>@td colspan=3> @div id=TEMPAT>@/div>@/td>@/tr>

@tr>@td>judul@/td>@td>:@/td>
@td>@input type=text name="judul" size=20 maxlength=20>@/td>
@/tr>
@tr>@td>@input type=submit value=simpan>@/td>@/tr>

@/table>
@/center>
@/form>
@/body>
@/html>