function setCookie(cookieName,cookieValue,cookiePath,cookieExpires){cookieValue=escape(cookieValue);if(cookiePath!=""){cookiePath=";Path="+cookiePath;}
document.cookie=cookieName+"="+cookieValue+";expires="+cookieExpires+cookiePath;}
function getCookie(name){var cookieString=document.cookie;var index=cookieString.indexOf(name+"=");if(index==-1){return null;}
index=cookieString.indexOf("=",index)+1;var endstr=cookieString.indexOf(";",index);if(endstr==-1){endstr=cookieString.length;}
return unescape(cookieString.substring(index,endstr));}