Item in Listbox to display content in another listbox

[chez]

Developement platform : Linux
I'm using cgi.

I have 2 listbox (<select>) on the same page.
the first listbox will display all the item name(flat file) from a directory.
the second listbox will then display the content of the selected items in first listbox to the second listbox once the item in first listbox is clicked or selected.

below are my first listbox. i have no idea if that is correct or not.

@testList = `ls -1 /u/test/html/cgi-bin/tester/List`;
 
 
print"<select multiple=\"multiple\">";
for(@testList){
$tester = $_; 
print"<option>$tester</option>";
}
print"</select>";

Pls advice and guide me through this. Thanks a lot

[acoder]

Add an onchange to the first listbox which calls a JavaScript function which would get all the selected options (opt.selected where opt is an option and selected is a property true/false).

Use a for loop to loop over the options. To add options to the second listbox, you can use new Option(...) or the select add() method.

This should be enough to get you started. If you get stuck, post your updated code.