function getCookieVal(offset){var endstr=document.cookie.indexOf(';',offset);if(endstr==-1)endstr=document.cookie.length;return unescape(document.cookie.substring(offset,endstr));}
function readCookie(nom){var arg=nom+'=';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'z';}