Set The Cookie Filename With JavaScript

Is there a way to set the cookie filename with JS?

Currently it is setting it as 'asp/' (my directory). Can i specify it?
This is my code:

function setCookie(NameOfCookie, value, expiredays)
{
// Three variables are used to set the new cookie.
// The name of the cookie, the value to be stored,
// and finally the number of days until the cookie expires.
// The first lines in the function convert
// the number of days to a valid date.

var ExpireDate = new Date ();
ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));

// The next line stores the cookie, simply by assigning
// the values to the "document.cookie" object.
// Note the date is converted to Greenwich Mean time using
// the "toGMTstring()" function.

document.cookie = NameOfCookie + "=" + escape(value) +
((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}

and this is how i call it:

setCookie('OpenJaw', 'true', Ƈ');