only allow users to select items from a listbox or items from drill around

The only other option I can think of is to edit check the value after they move off of the field and if they entered something that's not in your list then alert a message indicating the value is invalid.

We created a form that allows users to select an alternate requester ID but only those that had been defined for the user. It is similar to your solution and thought the code might provide some insight on how you could achieve your goals. The form started as a blank RQ04 and we store the values in the EDI Sub table.

function FORM_OnAfterDataInit()
{
//
//Builds Textarea1 display
//
var vCommit = "This form is only for those individuals authorized ";
vCommit = vCommit + "to have multiple requester ID's. ";
vCommit = vCommit + "If the dropdown displays no options and it should please contact ";
vCommit = vCommit + "MMIS.";

lawForm.setFormValue("textarea1",vCommit);

//
//Stores users ID and Prodcutline
//
var strID = portalWnd.oUserProfile.getAttribute("ID");
var strPDL = portalWnd.oUserProfile.getAttribute("productline");

//
//DME call to return individuals assigned to route inbaskets
//
var s = "?PROD="+strPDL;
s += "&FILE=EDSUBTBL&INDEX=EDSSET1&KEY=CHANGE_REQUESTER="+strID;
s += "&FIELD=EXTERNAL-VALUE";
s += "&OUT=XML&MAX=25";

//
//Makes call
//
var sReturn = portalWnd.httpRequest(portalWnd.DMEPath + s);

//
//Checks for errors
//
if (!sReturn || sReturn.status)
{
var msg="Error calling DME ";
msg += (sReturn
? "(status code): " + sReturn.status
: "bad server response.");
alert(msg);
return true;
}

//
//Assigns return to a new object
//
var vObjDMEXML = new portalWnd.DataStorage(sReturn);

//
//Breaks object into records
//
var vRecord = vObjDMEXML.document.getElementsByTagName("RECORD");

//
//Checks to see if no data was returned
//
if (vRecord.length == 0)
{
return true;
}
//
//Variables to load listbox
//
var strRequester = document.getElementById("VALUES_l183");
var ListVal1;
//ListVal1 = document.createElement("span");

//
//Fill List Box
//
for (var i=0;i {
ListVal1 = document.createElement("span");
var vCols = vRecord.getElementsByTagName("COL");
var vAppName = vCols[0].firstChild.data;

ListVal1.setAttribute("text",vAppName);
ListVal1.setAttribute("tran",vAppName);
ListVal1.setAttribute("disp",vAppName);
strRequester.appendChild(ListVal1);

}
return true;
}

function BUTTON_OnClick(id, row)
{
//
//Stores users ID and Prodcutline
//
var strID = portalWnd.oUserProfile.getAttribute("ID");
var strPDL = portalWnd.oUserProfile.getAttribute("productline");
var newRequester = lawForm.getFormValue("select20");

//
//Blank Value
//
if (newRequester == "")
{
alert("You need to select a requester");
return true;
}

//
//DME call to validate selection
//
var s = "?PROD="+strPDL;
s += "&FILE=EDSUBTBL&INDEX=EDSSET1&KEY=CHANGE_REQUESTER="+strID+"="+newRequester;
s += "&FIELD=EXTERNAL-VALUE";
s += "&OUT=XML&MAX=1";

//
//Makes call
//
var sReturn = portalWnd.httpRequest(portalWnd.DMEPath + s);

//
//Checks for errors
//
if (!sReturn || sReturn.status)
{
var msg="Error calling DME ";
msg += (sReturn
? "(status code): " + sReturn.status
: "bad server response.");
alert(msg);
return true;
}

//
//Assigns return to a new object
//
var vObjDMEXML = new portalWnd.DataStorage(sReturn);

//
//Breaks object into records
//
var vRecord = vObjDMEXML.document.getElementsByTagName("RECORD");

//
//Checks to see if no data was returned
//
if (vRecord.length == 0)
{
alert("You are not authorized to use requester ID ("+ newRequester + ") with this form");
return true;
}

//
//Open RSS with the new requester
//
var vURL = "/rss/html/index.htm?newreq=true&requester=" + newRequester;
portalWnd.openWindow(vURL)

return true;
}