getElementById(id) – IE7 issue

I’ll try and explain briefly here: Problem only on IE7.
I am passing a variable from Flash to an HTML form. I have some javascript code that captures this variable and displays it in an html input text field.
[B]Here is the javascript:[/B]

[CODE]<script language=”javascript”>
function setVal(id,val) {
var field = document.getElementById(id);
field.value = val;
}
</script>[/CODE]

[B]Here is the Flash (actionscript) variable code:[/B]

[CODE]ExternalInterface.call(“setVal”,’rgb’,display_txt.text);[/CODE]

[B]Here is the html input text box:[/B]

[CODE]<input type=”text” name=”file_name_show” id=”rgb” value=”<? echo $rgb;?>”>[/CODE]

[B]And here’s the FlashVars on the html page:[/B]

[CODE]fo.addParam(“FlashVars”, “&rgb=<?php echo $rgb; ?>&”);[/CODE]

What I’m doing is using Flash to upload a file, then grabbing the filename and displaying it in an html text box so I can pass it from page to page with PHP.
This works perfectly in IE6, FF, ect… But NOT in IE7 !
It is a known issue with IE7 that “getElementById(id)” has a bug. I need to know how to fix this please.

[B]You can see a striped down example here:Try It ![/B]
[URL=”http://www.poprocketpress.com/ad_uploads/test/flash_uploader.php”]http://www.poprocketpress.com/ad_uploads/test/flash_uploader.php[/URL]

Thanks for any help,

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