var today=new Date();
var expiry=new Date(today.getTime()+5*60*1000);

function getcookieval(offset){
  var endstr=document.cookie.indexOf(";",offset);
  if (endstr==-1){endstr=document.cookie.length;}
  return unescape(document.cookie.substring(offset,endstr));
}

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 deletecookie(name,path,domain){
  if (getcookie(name)){
    document.cookie=name + "=" +
    ((path) ? "; path=" + path: "") +
    ((domain) ? "; domain=" + domain : "") +
    "; exipires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

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=" + secure : "");
}