When I add some code like the below to a webpage

Question

sometimes when I add some code like the below to a
webpage[dwmr mx 2004 or cs4], the page destroyed/currupted like the
css missing[is inside a template], well I think page stills
displays ok online but in "design view" default fonts appear etc
destructions, well how I recover page just prior entered the code ?
<input name="st" type="hidden" value="<?=
isset($_GET['sort'])?$_GET['sort']:(isset($_GET['price'])?'price':(isset($_GET['popular'] )?'popular':(isset($_GET['wd4'])?'wd4':(isset($_GET['salon'])?'salon':(isset($_GET['manual '])?2:1)))));
?>" />
<script type="text/javascript">
function highlightTableCells()
document.getElementById('cars').style.backgroundColor='#00CC66';
switch(document.getElementById('st').value)
case "price":
document.getElementById('price').style.backgroundColor='#00CC66';
break;
case "2": //manual
document.getElementById('manual').style.backgroundColor='#00CC66';
document.getElementById('manual2').style.backgroundColor='#00CC66';
break;
case "1":
document.getElementById('auto').style.backgroundColor='#00CC66';
document.getElementById('auto2').style.backgroundColor='#00CC66';
break;
case "salon":
document.getElementById('salon').style.backgroundColor='#00CC66';
document.getElementById('salon2').style.backgroundColor='#00CC66';
break;
case "wd4":
document.getElementById('wd4').style.backgroundColor='#00CC66';
document.getElementById('wd42').style.backgroundColor='#00CC66';
break;
case "0":
document.getElementById('all').style.backgroundColor='#00CC66';
break;
case "popular":
document.getElementById('popular').style.backgroundColor='#00CC66';
document.getElementById('popular2').style.backgroundColor='#00CC66';
break;
case "4wd":
document.getElementById('wd4').style.backgroundColor='#00CC66';
document.getElementById('wd42').style.backgroundColor='#00CC66';
break;
case "mpvs":
document.getElementById('mpvs').style.backgroundColor='#00CC66';
break;
case "cabrios":
document.getElementById('open').style.backgroundColor='#00CC66';
break;
case "a":
document.getElementById('a').style.backgroundColor='#00CC66';
break;
case "b1":
document.getElementById('b1').style.backgroundColor='#00CC66';
break;
case "b2":
document.getElementById('b2').style.backgroundColor='#00CC66';
break;
case "c":
document.getElementById('c').style.backgroundColor='#00CC66';
break;
case "d":
document.getElementById('d').style.backgroundColor='#00CC66';
break;
case "d1":
document.getElementById('d1').style.backgroundColor='#00CC66';
break;
case "e1":
document.getElementById('e1').style.backgroundColor='#00CC66';
break;
case "e2":
document.getElementById('e2').style.backgroundColor='#00CC66';
break;
case "f":
document.getElementById('f').style.backgroundColor='#00CC66';
break;
case "g":
document.getElementById('g').style.backgroundColor='#00CC66';
break;
case "h1":
document.getElementById('h1').style.backgroundColor='#00CC66';
break;
case "h2":
document.getElementById('h2').style.backgroundColor='#00CC66';
break;
case "i":
document.getElementById('i').style.backgroundColor='#00CC66';
break;
case "j":
document.getElementById('j').style.backgroundColor='#00CC66';
break;
case "k1":
document.getElementById('k1').style.backgroundColor='#00CC66';
break;
case "k2":
document.getElementById('k2').style.backgroundColor='#00CC66';
break;
case "n":
document.getElementById('n').style.backgroundColor='#00CC66';
break;
case "p1":
document.getElementById('p1').style.backgroundColor='#00CC66';
break;
case "p2":
document.getElementById('p2').style.backgroundColor='#00CC66';
break;
case "s":
document.getElementById('s').style.backgroundColor='#00CC66';
break;
case "u":
document.getElementById('u').style.backgroundColor='#00CC66';
break;
</script>

Answer 1

Take a look at a previous thread on this topic: http://forums.adobe.com/message/5099353