$(document).ready(function(){
    $('#warrantyForm').submit(function(){
    	
    	var checkRequireds = $('#first_name').val().length *
					         $('#last_name').val().length *
					         $('#address1').val().length *
                             $('#city').val().length *
                             $('#zip').val().length *
                             $('#date_m').val().length *
                             $('#date_d').val().length *
                             $('#date_y').val().length *
                             $('#company_name').val().length *
					         $('#phone').val().length *
					         $('#serial_number').val().length;
    	
    
        if(!checkRequireds)
        {
        	MessageBox('Please fill all the fields');
        	return false;
        }
        if(!check_email($('#email').val()))
        {
        	MessageBox('Email address has invalid format. Check please');
            return false;
        }
        if(elem('agree').checked == false)
        {
        	MessageBox('Please read and accept all the Terms of Warranty');
	        return false;
        }
    	
    }); 
});