$(document).ready(function(){
    var _rule = 0;
    $("#booking-rulez-agree").click(function(){
        if($("#booking-rulez-agree").is(":checked")){ _rule = 1; }else{ _rule = 0; }
    })
    
    $("#form-booking").submit(function(){
        if(_rule==0){
            var _msg = $("#button-send").attr("alt");
            alert(_msg);
            return false;
        }else{
            $("#form-booking").submit();
        }
    
    })

})