Drop down informacion

[ncianc]

Hola!!!

Necesito insertar dos lineas en drop down.
La primera linea tiene la informacion principal.
La segunda linea se deberia poner automaticamente segun la informacion de la primera. Es decir:

Si selecciono en la primera: "Scope Changes"
En la segunda deberia aparecer automaticamente: "Scope Changes - Process"

Como puedo hacer eso? Ya que en la pantalla donde ingreso los datos lo hace pero en la pagina siguiente, donde se encuentra el historico de toda la informacion generada no me figura eso. Adjunto codigos:

<p style="margin-top: 0; margin-bottom: 0; line-height:150%"><font color="#000080"><b>&nbsp;Symptom Category</b></font><br>
<p style="margin-top: -1; margin-bottom: -1; word-spacing:-1">
&nbsp;<select size="1" name="SymptomCategory" id="SymptomCategory" onchange="populate(this)">
<option value=1>Scope Changes</option>
<option value=2>Schedule Changed</option>
<option value=3>Request Not Done As Procedures States</option>
<option value=4>Process Not Documented</option>
<option value=5>Human Error Internal</option>
<option value=6>Human Error External</option>
<option value=7>Comunication Problem Internal</option>
<option value=8>Comunication Problem External</option>
<option value=9>No Response From Document Owner</option>
<option value=10>Lack Of Support From Pm</option>
<option value=11>Lack Of Support From Spa</option>
<option value=12>Db Failure / Slow</option>
<option value=13>Teamroom Failure / Slow</option>
<option value=14>Other</option>
</select>
<br>

</p>
</p>
<p style="margin-top: 0; margin-bottom: 0; line-height:150%"><font color="#000080"><b>&nbsp;Category + Failure Code</b></font><br>
<p style="margin-top: -1; margin-bottom: -1; word-spacing:-1">
&nbsp;<select size="1" name="Category" id="Category">
</select>

<script type="text/javascript">
function populate(o)
{
d=document.getElementById("Category");
if(!d){return;}
var mitems=new Array();
mitems["1"]=["Scope Changes - Process"];
mitems["2"]=["Scope Changes - Process"];
mitems["3"]=["Scope Changes - Process"];
mitems["4"]=["Scope Changes - Process"];
mitems["5"]=["Human Error - Process"];
mitems["6"]=["Human Error - Process"];
mitems["7"]=["Human Error - Process"];
mitems["8"]=["Human Error - Process"];
mitems["9"]=["Lack of Stakeholders - Process"];
mitems["10"]=["Lack of Stakeholders - Process"];
mitems["11"]=["Lack of Stakeholders - Process"];
mitems["12"]=["Tool Failures - Tools"];
mitems["13"]=["Tool Failures - Tools"];
d.options.length=0;
cur=mitems[o.options[o.selectedIndex].value];
if(!cur){return;}
d.options.length=cur.length;
for(var i=0;i<cur.length;i++)
{
d.options[i].text=cur[i];
d.options[i].value=cur[i];
}
}

</script>