Help With Detecting Multiple Cookies using one script

On my website I am trying to get one script to check for up to 3 possible cookies that may be present on a visitors computer as they attempt to enter the site from one of three pages, and upon finding any one of the three cookies, it then allows the visitor through to the requested page.

I have attempted to get the script to set the same cookie (by name) on all 3 pages but it doesn't work because the cookies are automatically set using the name of the folder where the html document is located. So when the browser attempts to located the cookie it can't locate it because it already has a different name even though I'm trying to force the cookie to be set with a name of MY choosing.

I've also attempted to solve that issue by placing the entire script twice in the head portion of the webpage, and getting each script to check for it's own cookie (of a different name). That didn't work either. (okay so I'm a novice)

Here's the script I'm trying to use:

<script language="javascript" type="text/javascript">
2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
}
function DeleteCookie (name) {
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = GetCookie (name);
document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

var favorite = GetCookie('secular');

if (favorite != null) {
switch (favorite) {
case 'yes' : url = 'homepage.html'; // change these!
break;
}
window.location.href = url;
}
// End -->
</script>

Also, I was wondering if it is possible to get the following code

var favorite = GetCookie('secular');

to check for one of 3 cookies at one time. I've tried using a variety of changes such as the following with no luck:

var favorite = GetCookie('secular, stress_release');
var favorite = GetCookie(' "secular", "stress_release" ');
var favorite = GetCookie(' "secular, stress_release" ');
var favorite = GetCookie('secular', 'stress_release');

Any suggestions would be appreciated.