Your problem is that you have to remove the items in the second select list
first then add new items with the correct values. The person that said the
options object is read only is correct, I misunderstood what they meant, in
Netscape you cannot overwrite the values, you have to remove the options
object and insert a new one.
Here is some code that does what you are trying to do, this was done for a
project I worked on so you need to adapt it for you purposes
function checkSubmit(frmObj)
{
if (document.forms[frmObj].categories.options.selectedIndex == -1)
{
alert("Please select at least one category.");
}
else if (document.forms[frmObj].defaultCategory.options.selectedIndex
==
-1) //|| (document.forms[frmObj].defaultCategory.options.selectedIndex ==
0))
{
alert("Please select a default category.");
}
else
{
document.forms[frmObj].submit();
}
}
// parent function to determine action to take when click is placed
function processClick(frmName,sltName,dSltName)
{
var frmObj = document.forms[frmName];
// remove all from the default categories select list
removeAll(frmObj,dSltName);
// loop over the categories select list and if they are selected add
to
the default list.
for(var k=0;k<frmObj.elements[sltName].options.length;k++)
{
if (frmObj.elements[sltName].options[k].selected)
{
addOption(frmObj,sltName,dSltName,k);
}
}
}
// adds a option to the default categories select list
function addOption(frmObj,sltName,dSltName,id)
{
var topt = new Option(frmObj.elements[sltName].options[id].text);
topt.value = frmObj.elements[sltName].options[id].value;
frmObj.elements[dSltName].options[frmObj.elements[dSltName].options.length]
= topt;
}
// removes all options from the default categories select list
function removeAll(frmObj,sltName)
{
var lst = frmObj.elements[sltName].options.length;
for(var i=lst;i>-1;i--)
{
frmObj.elements[sltName].options[i] = null;
}
}
HTH
Donnie Bachan
Phone: (718) 217-2883
ICQ#: 28006783
"Nitendo Vinces - By Striving You Shall Conquer"
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