Pass variables from a dropdown list?

[mark39]

I'm trying to find a way to create a simple 'targeted ads' function on my page. When a user makes a selection from a dropdown list, I would like to use an onClick function to load an html file with embedded ad(or just image file) to a separate iframe when they submit. I know this in itself is easy enough just targeting the iframe, but I also have a search engine process when the form is sent. If I enter any 'option values' these get processed with the search form and I get errors.
Would anyone have any idea how to accomplish this?

Thanks

[mark39]

Hi guys,

I'm trying to create a targeted ad script that loads a specific ad into an iframe when 'onChange' occurs in a select box (or 'onClick' of submit button-haven't decided yet). My problem is: I can get the ad to load into the frame no-problem, but my conditional statement is skipped alltogether. I have tested with alerts and the function is returning checkbox states (true/false) etc & values are being returned from the select box. Doesn't matter what I do ANY selection causes the ad to load into the iframe.

Please help, I only have a few hairs left.......

Here's the script - I have no idea if I've written it correctly, I've only been at this a couple of weeks.

<script>
 
 
 
function changeAd(){ //this function being called from select box with: 'onChange=changeAd()'
 
var currentSel = document.getElementById("selection").value; //dropdown select box with ID of selection
var duff = document.getElementById("duff").checked; //checkbox with ID of 'duff'
var well = document.getElementById("well").checked; //checkbox with ID of 'well'
 
 
 
    if (duff == true && currentSel == "Alarm Systems and Monitoring"); //this statement is being ignored.
    { 
    document.getElementById("adbox").src = "ads/ad5.jpg"; //this IS occurring regardless of selection
    }       //the entire script is acting like: onChange=document.getElementById("adbox").src = "ads/ad5.jpg";
    }
</script>

[mark39]

Nevr mind , I figured it out.....stupid semicolon at the end of the 'if' statement.

it's always the little thigs........