RE:select multiple ??? saber los reg seleccionado
Verifica este código
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<SCRIPT ID=clientEventHandlersJS LANGUAGE=javascript>
<!--
function btn_onclick() {
for (var i=0;i<select11.length;i++){
if(select11.options[i].selected){
alert(select11.options[i].text);
}
}
}
//-->
</SCRIPT>
</head>
<body>
<select name="select11" id="select11" size="5" multiple>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
</select>
<input id=btn name=btn type=button value="btn" LANGUAGE=javascript onclick="return btn_onclick()">
</body>
</html>