Recaptcha 2.0 validation problem

$(document).ready(function(){

//global vars

    var enquiryfrm = $("#agt_mail_agent");

    var yourname = $("#agt_mail_name");

    var yournameInfo = $("#span_agt_mail_name");

    var youremail = $("#agt_mail_email");

    var youremailInfo = $("#span_agt_mail_email");

    var frnd_comments = $("#agt_mail_msg");

    var frnd_commentsInfo = $("#span_agt_mail_msg");

    

    //On blur

    yourname.blur(validate_yourname);

    youremail.blur(validate_youremail);

    frnd_comments.blur(validate_frnd_comments_author);

    //On key press

    yourname.keyup(validate_yourname);

    youremail.keyup(validate_youremail);

    frnd_comments.keyup(validate_frnd_comments_author);

    

    //On Submitting

    enquiryfrm.submit(function(){

        if(validate_yourname() & validate_youremail() & validate_frnd_comments_author())

        {
            //hideform();
            return true
        }
        else
        {
            return false;
        }
    });



    //validation functions

    function validate_yourname()

    {

        if($("#agt_mail_name").val() == '')

        {

            yourname.addClass("error");

            yournameInfo.text("Please Enter Your Name");

            yournameInfo.addClass("message_error2");

            return false;

        }

        else{

            yourname.removeClass("error");

            yournameInfo.text("");

            yournameInfo.removeClass("message_error2");

            return true;

        }

    }

    function validate_youremail()

    {

        var isvalidemailflag = 0;

        if($("#agt_mail_email").val() == '')

        {

            isvalidemailflag = 1;

        }else

        if($("#agt_mail_email").val() != '')

        {

            var a = $("#agt_mail_email").val();

            var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;

            //if it's valid email

            if(filter.test(a)){

                isvalidemailflag = 0;

            }else{

                isvalidemailflag = 1;    

            }

        }

        if(isvalidemailflag)

        {

            youremail.addClass("error");

            youremailInfo.text("Please Enter valid Email Address");

            youremailInfo.addClass("message_error2");

            return false;

        }else

        {

            youremail.removeClass("error");

            youremailInfo.text("");

            youremailInfo.removeClass("message_error");

            return true;

        }

        

    }

    

    function validate_frnd_comments_author()
    {                
        if($("#agt_mail_msg").val() == '')
        {
            frnd_comments.addClass("error");
            frnd_commentsInfo.text("Please Enter Comments");
            frnd_commentsInfo.addClass("message_error2");
            return false;
        }else{
            frnd_comments.removeClass("error");
            frnd_commentsInfo.text("");
            frnd_commentsInfo.removeClass("message_error2");
            return true;
        }

    }    
function reset_email_agent_form()
{
    document.getElementById('agt_mail_name').value = '';
    document.getElementById('agt_mail_email').value = '';
    document.getElementById('agt_mail_phone').value = '';
    document.getElementById('agt_mail_msg').value = '';    
}
});