function getCookieVal(offset)
{

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

function setCookie24(sName, sValue) {
        var today = new Date(), expires = new Date();
        expires.setTime(today.getTime() + (24*60*60*1000));
        document.cookie = sName + "=" + sValue + ";expires=" + expires.toGMTString();
}