var w3cookies = {
        date: new Date(),


        create: function(strName, strValue, intDays) {
                if ( intDays ) {
                        this.date.setTime(this.date.getTime()+(intDays*24*60*60*1000));
                        var expires = "; expires=" + this.date.toGMTString();
                } else {
                        var expires = "";
                }
                document.cookie = strName + "=" + strValue + expires + "; path=/";
        },


        read: function(strName) {
                var strNameIgual = strName + "=";
                var arrCookies = document.cookie.split(";");
                for ( var i = 0, strCookie; strCookie = arrCookies[i]; i++ ) {
                        while ( strCookie.charAt(0) == " ") {
                                strCookie = strCookie.substring(1,strCookie.length);
                        }
                        if ( strCookie.indexOf(strNameIgual) == 0 ) {
                                return strCookie.substring(strNameIgual.length,strCookie.length);
                        }
                }
                return null;
        },


        erase: function(strName) {
                this.create(strName,"",-1);
        }
}