Question

When I close a Firefox browser, and re-open, the cookies are gone.
How is this controlled?

I want to maintain certain user preferences/options in cookies.

Am using Firefox 10.0.2 on Windows-vista.

Answer 1

I believe the answer is simply to set the expiration using this, each time a cookie is written:

function setCookie(c_name,value,exdays)
 {
 var exdate=new Date();
 exdate.setDate(exdate.getDate() + exdays);
 var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
 document.cookie=c_name + "=" + c_value;
 }