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javscript passing url as a parameter gets decoded

Hi people,
I've come across a strange little problem when passing a url into a function which then uses it to change the url of an iframe. For some reason it gets decoded enroute but I don't know why?

basically heres my code:-
<script>
function popup_file(url)
{
      alert(url);
      document.getElementById('fileIF').src=url;
      // other stuff
}
</script>

<a href="javascript:popup_file('download.php?file=F5J%23%23+02+Cleaner.pdf')" >open</a>

When it hits the alert it displays a decoded url (which may just be the alert) BUT when i look at the parameters passed to download.php it says file=F5J

%23 is #

when creating the link in php, I urlencode the filename. But the only way to pass it correctly is to urlencode(urlencode($filename)) but why has popupfile decoded my url in the first place????

Tomarse111

Have you tried escaping it?

<script>
function popup_file(url)
{
      alert(escape(url));
      document.getElementById('fileIF').src=escape(url);
      // other stuff
}
</script>

<a href="javascript:popup_file('download.php?file=F5J%23%23+02+Cleaner.pdf')" >open</a>

Open in new window

waygood

ASKER

I've tried that and it escapes the whole url including the script and not just the file parameter

ASKER CERTIFIED SOLUTION

raja_ind82

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