function getCookie(NameOfCookie)
{ if (document.cookie.length > 0) 
{ begin = document.cookie.indexOf(NameOfCookie+"="); 
if (begin != -1) 
{ begin += NameOfCookie.length+1; 
end = document.cookie.indexOf(";", begin);
if (end == -1) end = document.cookie.length;
return unescape(document.cookie.substring(begin, end)); } 
}
return null; 
}

function setCookie(NameOfCookie, value, expiredays) 
{ var ExpireDate = new Date ();
ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
document.cookie = NameOfCookie + "=" + escape(value) + 
((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}

function delCookie (NameOfCookie) 
{ if (getCookie(NameOfCookie)) {
document.cookie = NameOfCookie + "=" +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
} 

function set_name(form) {
var username = form.nameinput.value
if (username != "") {
if (confirm("Are you sure you want this saved as your name?")) {
setCookie ("my_name", username, 365);
window.history.go(0);
   }
}
else alert("Geez, at least enter something, entering nothing will cause an error.");
}