function setCookie(nom, valeur, duree_minutes)
{
	var expire = new Date();
	var temps = expire.getTime() + (duree_minutes * 60 * 1000);
	expire.setTime(temps);
	document.cookie = nom + "=" + valeur + "; expires=" + expire.toGMTString();
}

function delCookie(nom)
{
	var expire = new Date();
	var temps = expire.getTime() - 3600 * 1000;
	expire.setTime(temps);
	document.cookie = nom + "=Test; expires=" + expire.toGMTString();
}

function getCookieInfo(dataName)
{
	var cookieLen = dataName.length;
    var cookieData = document.cookie;
    var allcookieLen = cookieData.length;
    var i = 0;
    var cookieEnd;

    while(i < allcookieLen)
    {
    	var j = i + cookieLen;
        if (cookieData.substring(i,j) == dataName)
        {
        	cookieEnd = cookieData.indexOf(";", j);
            if (cookieEnd == -1)
            	cookieEnd = cookieData.length;
            return unescape(cookieData.substring(j+1, cookieEnd))
        }
        i++;
    }
	return "vide";
}