[wirehopper]

HTML Code:

<script type="text/javascript">
document.write('<span id="test">Test</span>');
t=document.getElementById('test');
t.setAttribute('onclick',bork);  /* Set onclick attribute */
function bork(e)
{
alert('Bork');
}
</script>

As far as the duplicate issue - options:

Create an array that lists the items in the first select statement, as well as a flag to indicate whether the user selected them. If the user already selected the item, disregard reselections.

-- or --

Use the sort JavaScript sort() Method to sort the target array. That should make the search process quicker.

-- or --

Flatten the target array with JavaScript join() Method and search the resultant string.