old-email-validation.js

        // http://docs.jquery.com/Plugins/Validation/Methods/email
        email: function(value, element) {
            // contributed by Dennis Hall
            // simplified enough for ff2 to not choke
            return this.optional(element) || /^\s*[^ <>]+@[^ <>]+\.[a-z]{2,9}\s*$/i.test(value);
        },
    
        email_multiple: function(value, element) {
            // contributed by Dennis Hall
            // simplified enough for ff2 to not choke
            var length = value.length,
                indexOfSeparator = -1,
                isValid = true;
            ///
            for(var i=0;i<length;i++){
                var ch = value.charAt(i);
                if( ch == ',' || ch == ';' || i == length-1){
                    isValid = isValid && /^\s*[^ <>]+@[^ <>]+\.[a-z]{2,9}\s*$/i.test(value.substring(indexOfSeparator+1, (i==length-1?length:i)));
                    indexOfSeparator = i;
                }
            }
            return this.optional(element) || isValid;
        },
    
        phone3: function(value, element) {
            // contributed by Dennis Hall
            // first field must be of the form "<field name id>-1", and other 2 fields must be of the form "<field name id>-2", "<field name id>-3"
            var idBase = element.id.replace(/-1$/,''),
                values = [value, $('#'+idBase+'-2').val(), $('#'+idBase+'-3').val()],
                requiredLengths = [3,3,4];
            ///
            for(var i=0;i<3;i++){
                if(!/^\d+$/.test(values[i]) || values[i].length != requiredLengths[i]){
                    return false;
                }
            }
            
            return true;
        },