get cookie

[mehdiali]

hi there
i visit a site and it set a cookie on my computer.
i want to know is there any way that i can access to it?
i want to know value and the name of it.
how it set it, i mean it must some data to me, so can i get them?
could i use form :
var oXmlHttp = zXmlHttp.createRequest();
oXmlHttp.open("get", "info.txt", true);
oXmlHttp.send(null);
displayCustomerInfo(oXmlHttp.response[/XML]);
...
thank you