function setCookie(name,value,expires,path,domain,secure){
document.cookie=name+"="+escape(value)+
((expires)? "; expires="+expires.toGMTString(): "")+
((path)? "; path="+path : "; path=/")+
((domain)? "; domain="+domain : "")+
((secure)? "; secure" : "")}
function getCookie(name){
var dc=document.cookie
var prefix=name+"="
var begin=dc.indexOf("; "+prefix)
if(begin==-1){
begin=dc.indexOf(prefix)
if(begin !=0)return null}
else{
begin+=2}
var end=document.cookie.indexOf(";",begin)
if(end==-1){
end=dc.length}
return unescape(dc.substring(begin+prefix.length,end))}
function deleteCookie(name,path,domain){
if(getCookie(name)){
document.cookie=name+"="+
((path)? "; path="+path : "; path=/")+
((domain)? "; domain="+domain : "")+
"; expires=Thu, 01-Jan-70 00:00:01 GMT"}}