Problem with flash logo

[andyase]

Hi I have a flash logo, I used the java redirect script for the IE browser message.
All worked fine until I opened the https part of the site!
I changed the link to the logo to https becouse i got the other none secure message now i get the error message as in image below.

Here is the code I am using for the flash/javascripy.
Can anyone tell me the best way to make this relative so as to get rid of the error.
javascript file

// JavaScript Document flash fix
document.write('<OBJECT classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000"');
document.write('codebase="https://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"');
document.write('WIDTH="750" HEIGHT="250" id="logo" ALIGN="center">');
document.write('<PARAM NAME=movie VALUE="https://secure.letterfromsanta.eu/includes/templates/1_1/images/logo.swf"> <PARAM NAME=loop VALUE=false> <PARAM NAME=menu VALUE=false> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE=#> <EMBED src="https://secure.letterfromsanta.eu/includes/templates/1_1/images/logo.swf" loop=false menu=false quality=high bgcolor=# WIDTH="750" HEIGHT="250" NAME="logo" ALIGN=""');
document.write('TYPE="application/x-shockwave-flash" PLUGINSPAGE="https://www.macromedia.com/go/getflashplayer"></EMBED>');
document.write('</OBJECT>');

and for the redirect in tpl_header.php

<div id="logoWrapper">
<div id="logo"><script src="https://secure.letterfromsanta.eu/includes/templates/1_1/jscript/logo.js"></script>

I think the error is caused because I have called the flash from https://secure.
can any tell me the code for a relative address.

Regards
andy