Put this code in your page:
<html>
<head>
<style>
.text
{
FONT: 10pt arial;
COLOR: black
}
</style>
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function moveOver()
{
var boxLength = document.choiceForm.choiceBox.length;
var selectedItem = document.choiceForm.available.selectedIndex;
var selectedText = document.choiceForm.available.options[selectedItem].text;
var selectedValue = document.choiceForm.available.options[selectedItem].value;
var i;
var isNew = true;
if (boxLength != 0) {
for (i = 0; i < boxLength; i++) {
thisitem = document.choiceForm.choiceBox.options[i].text;
if (thisitem == selectedText) {
isNew = false;
break;
}
}
}
if (isNew) {
newoption = new Option(selectedText, selectedValue, false, false);
document.choiceForm.choiceBox.options[boxLength] = newoption;
}
document.choiceForm.available.selectedIndex=-1;
}
function removeMe() {
var boxLength = document.choiceForm.choiceBox.length;
arrSelected = new Array();
var count = 0;
for (i = 0; i < boxLength; i++) {
if (document.choiceForm.choiceBox.options[i].selected) {
arrSelected[count] = document.choiceForm.choiceBox.options[i].value;
}
count++;
}
var x;
for (i = 0; i < boxLength; i++) {
for (x = 0; x < arrSelected.length; x++) {
if (document.choiceForm.choiceBox.options[i].value == arrSelected[x]) {
document.choiceForm.choiceBox.options[i] = null;
}
}
boxLength = document.choiceForm.choiceBox.length;
}
}
function saveMe() {
var strValues = "";
var boxLength = document.choiceForm.choiceBox.length;
var count = 0;
if (boxLength != 0) {
for (i = 0; i < boxLength; i++) {
if (count == 0) {
strValues = document.choiceForm.choiceBox.options[i].value;
}
else {
strValues = strValues + "," + document.choiceForm.choiceBox.options[i].value;
}
count++;
}
}
if (strValues.length == 0) {
alert("You have not made any selections");
}
else {
alert("Here are the values you've selected:\r\n" + strValues);
}
}
// End -->
</script>
</HEAD>
<BODY>
<br><br><br>
<center>
<TABLE width="150" border="0" cellpadding="0" cellspacing="0" bgcolor=#F5F4E0>
<tr>
<td colspan=3><img src=images/spacer.gif height=10></td>
</tr>
<tr>
<td><img src=images/spacer.gif width=10></td>
<td bgcolor=white align=center><center>
<form name="choiceForm">
<table border=0 cellpadding="0" cellspacing="3">
<tr>
<td valign="top" width=175> <font class=text>Available Content:</font><br>
<select name="available" size=10 onchange="moveOver();">
<option value=1>Company News
<option value=2>Industry News
<option value=3>Product Updates
<option value=4>Product Specifications
<option value=5>Order History
<option value=6>Order Status
<option value=7>Contacts
<option value=8>Calendar of Events
<option value=9>Scheduler
<option value=10>Notes
</select></td>
<td valign="top">
<font class=text>Your Choices:</font><br>
<select multiple name="choiceBox" style="width:150;" size="10">
</select></td>
</tr>
<tr>
<td colspan=2 height=10 align=center>
<input type="button" value="Remove" onclick="removeMe();">
<input type="button" value="Get Selected Values" onclick="saveMe();"></td>
</tr>
</table>
</form>
</center>
</td>
<td><img src=images/spacer.gif width=10></td>
</tr>
<tr>
<td colspan=3><img src=images/spacer.gif height=10></td>
</tr>
</table>
</center>
</body>
</html>
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