Hi kiavash,
* You can disable the information box by doing the following steps:
- setting the value of parameters as No in the configuration of Sj Vm Ajax Tabs module (see the attached image)
- opening the ajax-tabs.css file in "your_site/templates/sj_cars/html/mod_sj_vm_ajaxtabs", finding:
div #tabslider-text-pro .inner {
    background: url("../../images/slide-show-desc-inner.png") no-repeat scroll left top transparent;
    color: #FFFFFF;
    display: block;
    height: 289px;
    margin: 3px;
    padding: 15px;
    width: 243px;
}
 
change to:
div #tabslider-text-pro .inner {
    /*background: url("../../images/slide-show-desc-inner.png") no-repeat scroll left top transparent;*/
    color: #FFFFFF;
    display: block;
    height: 289px;
    margin: 3px;
    padding: 15px;
    width: 243px;
}
 
---------
div #tabslider-text-pro {
    background: url("../../images/slide-show-desc.png") repeat scroll left top transparent;
    border-radius: 4px 4px 4px 4px;
    color: #FFFFFF;
    display: block;
    height: 325px;
    position: absolute;
    right: 12px;
    top: 55px;
    width: 279px;
}
 
change to:
div #tabslider-text-pro {
   /* background: url("../../images/slide-show-desc.png") repeat scroll left top transparent;*/
    border-radius: 4px 4px 4px 4px;
    color: #FFFFFF;
    display: block;
    height: 325px;
    position: absolute;
    right: 12px;
    top: 55px;
    width: 279px;
}
 
* Sj Vm Ajax Tabs module is not supported to slide automatically now.
Thanks