cheap nfl jerseys china cheap nfl jerseys free shipping wholesale nfl jerseys china wholesale jerseys from china cheap nfl jerseys free shipping cheap nfl jerseys for sale cheap jerseys free shipping wholesale nfl jerseys from china cheap nfl jerseys sale cheap nike nfl jerseys china wholesale jerseys free shipping cheap nfl jerseys wholesale wholesale nfl jerseys online cheap nfl jerseys wholesale china jerseys wholesale cheap coach handbags outlet authentic designer handbags cheap coach handbags outlet cheap coach purses outlet discount coach bags coach bags sale coach purse outlet cheap real coach purses coach handbags sale online coach purse outlet michael kors outlet online store cheap michael kors bags cheap michael kors purse michael kors factory outlet online cheap michael kors handbags cheap michael kors purses michael kors bags outlet online cheap michael kors purse michael kors handbags discount cheap michael kors purse michael kors handbags discount
cheap nfl jerseys china cheap nfl jerseys free shipping wholesale nfl jerseys china wholesale jerseys from china cheap nfl jerseys free shipping cheap nfl jerseys for sale cheap jerseys free shipping wholesale nfl jerseys from china cheap nfl jerseys sale cheap nike nfl jerseys china wholesale jerseys free shipping cheap nfl jerseys wholesale wholesale nfl jerseys online cheap nfl jerseys wholesale china jerseys wholesale cheap coach handbags outlet authentic designer handbags cheap coach handbags outlet cheap coach purses outlet discount coach bags coach bags sale coach purse outlet cheap real coach purses coach handbags sale online coach purse outlet michael kors outlet online store cheap michael kors bags cheap michael kors purse michael kors factory outlet online cheap michael kors handbags cheap michael kors purses michael kors bags outlet online cheap michael kors purse michael kors handbags discount cheap michael kors purse michael kors handbags discount
XHTML
the extensible markup language
1) COSA E' XHTML
* XHTML1.0=riformulazione di HTML 4.0 in XML, linguaggio altrimenti troppo rigoroso
* Benefici della traduzione:
   1) gli sviluppatori HTML propongono continuamente nuovi tag: il linguaggio XML fornisce la possibilit� di standardizzare queste proposte e quindi permettere maggiori interventi
   2) in questo periodo si stannno sviluppando nuove piattaforme che consentiranno l'accesso ad internet attraverso sistemi alternativi al PC multimediale: l'XML essendo generalizzato consente di definire un linguaggio adatto a questi nuovi media
2) ESEMPI DI XHTML
* Ecco un esempio di un documento XML minimo
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Virtual Library</title>
</head>
<body>
<p>Moved to vlib.org.</p>
</body>
</html>
* All'interno di un documento XHTML si possono inserire parti scritte in altri linguaggi XML, come per esempio in MathXML
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>A Math Example</title>
</head>
<body>
<p>The following is MathML markup:</p>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply> <log/>
<logbase>
<cn> 3 </cn>
</logbase>
<ci> x </ci>
</apply>
</math>
</body>
</html>
3) Differenze sostanziali con HTML 4.01
* XHTML e' case-sensitive
* end-tag e' sempre richiesto (cfr <br> che al max puo' essere abbreviato in <br/>)
* utilizzo di attributo id piuttosto che name
4) SVILUPPO FUTURO
* modularizzazione dell'HTML = sviluppo di tag particolari per browser speciali
* possibilita' di ampliare l'HTML
* possibilit� di scrivere profili di documenti per gruppi particolari di persone (es. chimici, matematici, medici, etc coi loro tag particolari)

ultimo aggiornamento Febbraio 2000