What would the syntax be for type "select"?

Question

This onload function works great for type "text" - what would the syntax be for type "select"? or is there an example?
(Vikas' example pg 227)
window.onload=function () {
var text=document.getElementsByTagName('input');
for (var j=0;j<text.length;j++) {
var ip=text[j];
if (ip.type=="text") {
ip.onchange=function () {
     var td=html_CascadeUpTill(this,'TD');
     var tr=html_CascadeUpTill(this,'TR');
     // Getting the value of the PK
     var pk=tr.lastChild.getElementsByTagName('input')[1].value;
     alert(pk);
     var l_cellindex=td.cellIndex;
     var l_column=g_headers[l_cellindex].id;
     var app=html_GetElement('pFlowId').value;
     var pg=html_GetElement('pFlowStepId').value;
     var get=new htmldb_Get(null,app,'APPLICATION_PROCESS=session_auto_update',pg);
     get.add('G_ITEM1',l_column);
     get.add('G_ITEM2',this.value);
     get.add('G_ITEM3',pk);
     alert('column='+l_column+',value='+this.value+',pk='+pk);
     gReturn=get.get();
     if (gReturn) { alert(gReturn); this.focus();}
     get=null;
</script>

Answer 1

Here it is... Do I need any adjustments?
var selectlist=document.getElementsByTagName('select');
for (var k=0;k<selectlist.length;k++) {
var select_ip=selectlist[k];
//alert(select_ip.type);
if (select_ip.type=="select-one") {
//alert(select_ip.type);
select_ip.onchange=function () {
var td=html_CascadeUpTill(this,'TD');
var tr=html_CascadeUpTill(this,'TR');
// Getting the value of the PK
var pk=tr.lastChild.getElementsByTagName('input')[1].value;
//alert('PK='+pk);
var l_cellindex=td.cellIndex;
var l_column=g_headers[l_cellindex].id;
var app=html_GetElement('pFlowId').value;
var pg=html_GetElement('pFlowStepId').value;
var get=new htmldb_Get(null,app,'APPLICATION_PROCESS=session_auto_update',pg);
get.add('G_ITEM1',l_column);
get.add('G_ITEM2',this[this.selectedIndex].value);
get.add('G_ITEM3',pk);
//alert('COLUMN='+l_column+',VALUE='+ this[this.selectedIndex].value+',PK='+pk);
gReturn=get.get();
if (gReturn) { alert(gReturn); this.focus();}
get=null;
}