codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript">
function EvidenzaRiga(tasto,riga){
tasto.value = (tasto.value=='evidenza riga')? 'disattiva riga' : 'evidenza riga';
document.getElementById('riga_'+riga).className = (tasto.value=='disattiva riga')? 'select' : 'normal';
tasto.className = (tasto.value=='disattiva riga')? 'but_on' : 'but_off';
}
</script>
<style type="text/css">
tr.normal{background-color:#C90}
tr.select{background-color:#CC6}
.but_on{background-color:#996;}
.but_off{background-color:#CCC;}
</style>
</head>
<body>
<table width="100%" border="0" cellspacing="1" cellpadding="1">
<tr id="riga_0" class="normal">
<td></td>
<td></td>
<td><input name="evidenza_0" class="but_off" type="button" id="evidenza_0" value="evidenza riga" onclick="EvidenzaRiga(this,0)" /></td>
</tr>
<tr id="riga_1" class="normal">
<td></td>
<td></td>
<td><input name="evidenza_1" type="button" class="but_off" id="evidenza_1" onclick="EvidenzaRiga(this,1)" value="evidenza riga" /></td>
</tr>
<tr id="riga_2" class="normal">
<td></td>
<td></td>
<td><input name="evidenza_2" type="button" class="but_off" id="evidenza_2" onclick="EvidenzaRiga(this,2)" value="evidenza riga" /></td>
</tr>
</table>
</body>
</html>