I want to include a different file when the user selects an item from a select field (pulldown menu) in an HTML form, but without hitting the submit button. I guess it would be a psuedo submit? Do I have to use javascript?

ie: they drop down the menu and select 1. below the pulldown menu is now displayed file1.txt. etc.

I did some more research... looks like it's javascript. but I found different methods and I would just like to know what is the best way to do it. I was using macromedia dreamweaver just to look for a solution and they use onChange="MM_jumpMenu('parent',this,0)" and then have a value thing on the option tag that they make you set to a file, so I set it to my same PHP file the form is in. that didn't work. this other site says to do this:

<script> 
function refreshstuff() 
{ 
   document.foo.foo2.value="changed"; 
   document.foo.submit(); 
} 
</script> 

<form name="foo"> 

<select name="foo3" onChange="refreshstuff();"> 
<option>...</option> 
... 
</select> 
<input type="hidden" name="foo2" value="unchanged"> 
<?php 
if($foo2 == "changed") 
{ 
} ?>

which is better? I couldn't get the macromedia version working so I opted for the second one.

uhh... try to do like this...

<select name="foo3" onchange="document.location='?content='+this.value ;">
<option value="page1">goto page1</option>
<option value="page1">goto page1</option>
</select>

<?include "$content.php"?>

$content is a php variable that contains name of page that should be included. on changing "selectbox" value script sends a name of a page to current page. php's command includes it...
hope it's clear