function check_form(form)

{


    if(form.surname.value==''){

        alert( AlertValueForm["surname"] );

        form.surname.focus();

        return false ;

    

    }


	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;

	if(!form.email.value.match(emailExp))

	{

        alert( AlertValueForm["email"]  );

        form.email.focus();

        return false;

	}

    

     if(form.telephone.value==''){

        alert( AlertValueForm["telephone"] );

        form.telephone.focus();

        return false;

    }



    if(form.interested_in.selectedIndex == 0){

    alert( AlertValueForm["interested_in"] );

        form.interested_in.focus();

    return false;

    }

    if(form.select_country.selectedIndex == 0){

        alert( AlertValueForm["select_country"] );

        form.select_country.focus();

    return false;

    }	

		return true;

}