Dark_Delphin,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
</head>
<body>
<select onchange="if(this.value==8) alert('ok')">
<option value="1">1</option>
<option value="8">2</option>
<option value="3">3</option>
</select>
<select onchange="if(this.selectedIndex==1) alert('ok')">
<option value="1">1</option>
<option value="8">2</option>
<option value="3">3</option>
</select>
</body>
</html>