Dob day validation error for 08 in magento customer registration

Plz put the following script in the top of dob.phtml

< script type ="text/javascript">
<!--Varien.DateElement = Class.create();Varien.DateElement.prototype = {
    initialize: function(type, content, required, format) {
        if (type == 'id') {
            // id prefix
            this.day    = $(content + 'day');
            this.month  = $(content + 'month');
            this.year   = $(content + 'year');
            this.full   = $(content + 'full');
            this.advice = $(content + 'advice');
        } else if (type == 'container') {
            // content must be container with data
            this.day    = content.day;
            this.month  = content.month;
            this.year   = content.year;
            this.full   = content.full;
            this.advice = content.advice;
        } else {
            return;
        }

        this.required = required;
        this.format   = format;
        
        this.day.addClassName('validate-custom');
        this.day.validate = this.validate.bind(this);
        this.month.addClassName('validate-custom');
        this.month.validate = this.validate.bind(this);
        this.year.addClassName('validate-custom');
        this.year.validate = this.validate.bind(this);

        this.year.setAttribute('autocomplete','off');

        this.advice.hide();
    },
    validate: function() {
        var error = false;
        if (this.day.value=='' && this.month.value=='' && this.year.value=='') {
            if (this.required) {
                error = '<?php echo $this->__('Das Datum ist eine ben&ouml;tigte Angabe.');?>';
            } else {
                this.full.value = '';
            }
        } else if (this.day.value=='' || this.month.value=='' || this.year.value=='') {
            error = '<?php echo $this->__('Please enter a valid full date.');?>';
        } else {
            var date = new Date();
            if (this.day.value<1 || this.day.value>31) {
                error = '<?php echo $this->__('Please enter a valid day (1-31).');?>';
            } else if (this.month.value<1 || this.month.value>12) {
                error = '<?php echo $this->__('Please enter a valid month (1-12).');?>';
            } else if (this.year.value<1900 || this.year.value>date.getFullYear()) {
                error = '<?php echo $this->__('Please enter a valid year (1900-2010).');?>';
            } else {
                this.full.value = this.format.replace(/(%m|%b)/i, this.month.value).replace(/(%d|%e)/i, this.day.value).replace(/%y/i, this.year.value);
                var testFull = this.month.value + '/' + this.day.value + '/'+ this.year.value;
                var test = new Date(testFull);
                if (isNaN(test)) {
                    error = 'Please enter a valid date.';
                }
            }
        }

        if (error !== false) {
            try {
                this.advice.innerHTML = Translator.translate(error);
            }
            catch (e) {
                this.advice.innerHTML = error;
            }
            this.advice.show();
            return false;
        }
        
        // fixing elements class
        this.day.removeClassName('validation-failed');
        this.month.removeClassName('validation-failed');
        this.year.removeClassName('validation-failed');
        
        this.advice.hide();
        return true;
    }
};
Varien.DOB = Class.create();Varien.DOB.prototype = {
    initialize: function(selector, required, format) {
        var el = $$(selector)[0];
        var container       = {};
        container.day       = Element.select(el, '.dob-day input')[0];
        container.month     = Element.select(el, '.dob-month input')[0];
        container.year      = Element.select(el, '.dob-year input')[0];
        container.full      = Element.select(el, '.dob-full input')[0];
        container.advice    = Element.select(el, '.validation-advice')[0];
        
        new Varien.DateElement('container', container, required, format);
    }
};//--></script>


and enjoy............