function getCookieVal(offset){
var endstr=document.cookie.indexOf(";",offset);
if(endstr==-1)
endstr=document.cookie.length;
return unescape(document.cookie.substring(offset,endstr));
}
function FixCookieDate(date){
var base=new Date(0);
var skew=base.getTime();
if(skew>0)
date.setTime(date.getTime()-skew);
}

function GetCookie(name){
var arg=name+"=";
var alen=arg.length;
var clen=document.cookie.length;
var i=0;
while(i<clen){
var j=i+alen;
if(document.cookie.substring(i,j)==arg)
return getCookieVal(j);
i=document.cookie.indexOf(" ",i)+1;
if(i==0)break;
}
return null;
}
function SetCookie(name,value,expires,path,domain,secure){
document.cookie=name+"="+escape(value)+
((expires)?"; expires="+expires.toGMTString():"")+
((path)?"; path="+path:"")+
((domain)?"; domain="+domain:"")+
((secure)?"; secure":"");
}
function DeleteCookie(name,path,domain){
if(GetCookie(name)){
document.cookie=name+"="+
((path)?"; path="+path:"")+
((domain)?"; domain="+domain:"")+
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}