<select onchage=cc() id=s1>
<option value=2>网卡</option>
<option value=3>PPOE</option>
</select><input type=submit>
<script>
function cc(){
if(s1.value==2) form1.action="net.htm";
if(s1.value==3) form1.action="pp.htm";
}
</script>
<option value=2>网卡</option>
<option value=3>PPOE</option>
</select><input type=submit>
<script>
function cc(){
if(s1.value==2) form1.action="net.htm";
if(s1.value==3) form1.action="pp.htm";
}
</script>
<select id="s1">
<option value=2>网卡</option>
<option value=3>PPOE</option>
</select>
<input type=button onClick="cc()" value=" 提 交 ">
</form>
<script>
function cc()
{
if(document.all.s1.value==2)
{
form1.action="net.htm";
form1.submit();
}
if(document.all.s1.value==3)
{
form1.action="pp.htm";
form1.submit();
}
}
</script>