Probleme d'incomptibilités IE & FF

Bonsoir

voici le code de ma page, j'essaie de realiser un petit tableau en CSS & JAVASCRIPT, sur internet explorer ca marche pas de probleme, mais sur firefox je peux pas naviguer y'en as que la premiere page qui s'affiche puis j'ai pas la mien pour clicker sur les deux autres liens "technologies et business" j'espere était claire

merci d'avance
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<style type="text/css">
<!--
.newstab {
	color: #006699;
	text-decoration: none;
	background-color: #66FF66;
	border: 1px solid #006699;
	cursor:hand;
}
.newscat{
	border-top:1px #999999 solid;
	font-family: Tahoma, Arial, "Times New Roman";
	font-size: 10px;
	color: #333333;
	text-decoration: none;
}
.newstable{
 position:absolute; height:120px; width:100%; background-color:#F0F0F0; padding-top:16px; padding-bottom:5px; border-bottom:1px #666666 solid;
 }
.newscatabselected{
	color:#FFFFFF;
	background-color:#FF0000;
}
-->
</style>
<div style="position:relative;">
	<div id="globalnewstab" style="visibility:visible;" class="newstable">
	<? 
$art_sql="Select * from `feedsnews` where `status`='y' order by `pubdate` Desc limit 0,8";
$art_rs=mysql_query($art_sql);
if(mysql_numrows($art_rs)>0){ // --1";
while($art_vl=mysql_fetch_array($art_rs)){
?>
		  <div class="newsitem">&raquo;<a href="/stories/<?=$art_vl[title]?>" class="newslink">
		    <?=$art_vl[title]?>
		  </a></div>  
<?
}
}
?>
 
 
	</div>
 
 
 
	<div id="technewstab" style="visibility:hidden;" class="newstable">
<? 
unset($art_vl,$art_sql,$art_rs);
$art_sql="Select * from `feedsnews` where `status`='y' and `cat`='Technology' order by `pubdate` Desc limit 0,8";
$art_rs=mysql_query($art_sql);
if(mysql_numrows($art_rs)>0){ // --1";
while($art_vl=mysql_fetch_array($art_rs)){
?>
		  <div class="newsitem">&raquo; <a href="/stories/<?=$art_vl[title]?>" class="newslink"><?=$art_vl[title]?></a></div>  
<?
}
}
?>	
	</div>
	<div id="businewstab" style="visibility:hidden;" class="newstable">
<? 
unset($art_vl,$art_sql,$art_rs);
$art_sql="Select * from `feedsnews` where `status`='y' and `cat`='Business' order by `pubdate` Desc limit 0,8";
$art_rs=mysql_query($art_sql);
if(mysql_numrows($art_rs)>0){ // --1";
while($art_vl=mysql_fetch_array($art_rs)){
?>
		  <div class="newsitem">&raquo; <a href="/stories/<?=$art_vl[title]?>" class="newslink"><?=$art_vl[title]?></a></div>  
<?
}
}
?>	
	</div>
	</div>
	<div align="right" class="newscat" style="position:relative;"><table border="0" cellspacing="0" cellpadding="0" style="padding-left:2px; padding-right:2px; padding-bottom:2px;">
  <tr>
    <td id="newstabglob" style="background-color:#CCCCCC;" onMouseOver="this.style.color='red'; this.style.cursor='hand';" onMouseOut="this.style.color=''" onclick="globalnewstab.style.visibility='visible'; businewstab.style.visibility='hidden'; technewstab.style.visibility='hidden';this.style.background='#CCCCCC'; newstabtech.style.background=''; newstabbiz.style.background='';">Global</td>
	<td id="newstabtech" onMouseOver="this.style.color='red'; this.style.cursor='hand';" onMouseOut="this.style.color=''" onclick="globalnewstab.style.visibility='hidden'; businewstab.style.visibility='hidden'; technewstab.style.visibility='visible';this.style.background='#CCCCCC'; newstabbiz.style.background=''; newstabglob.style.background='';">Technology</td>
	<td id="newstabbiz" onMouseOver="this.style.color='red'; this.style.cursor='hand';" onMouseOut="this.style.color=''" onclick="globalnewstab.style.visibility='hidden'; businewstab.style.visibility='visible'; technewstab.style.visibility='hidden'; this.style.background='#CCCCCC'; newstabtech.style.background=''; newstabglob.style.background='';" >Business</td>  </tr>
</table>
</div>