function prepocet(vstup){
            var vystup = 0;
            var vstupMark   = vstup.substring(0,1);
            switch (vstupMark){ 
            	case "B":
                    vystup  = 109;
            	break;
            	case "R":
                    vystup  = 555;
            	break;
            	default :
                vystup  ="n/a";
            }
            $("#cenamotivu").html (vystup + " Kč");
        }    
        $(document).ready(function(){
            var ua  = navigator.userAgent,
            event   = (ua.match(/iPad/i)) ? "touchstart" : "click";
            $("#cenamotivu").html ( 109 + " Kč");
            $(".colorSet").bind(event, function(event){
                var barva  = $("input:radio[name=color]:checked").val();
                $("input:radio[name=color]").bind(event, prepocet( barva )) ;
            });
        });