function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}

function setcolor(what){
document.body.style.backgroundColor=what
document.cookie="bgcolor="+what
}

if (get_cookie("bgcolor")!="")
document.body.style.backgroundColor=get_cookie("bgcolor")