Using jQuery:

$(document).ready(function () {
    $(":input).keypress(function(event) {
        if (event.keyCode === 13 || event.keyCode === 10) // 10 is for mac
            event.preventDefault();
            $(this).next(":input").focus();
        }
    })
});

This may work if all of your input types are at the same level (siblings). Otherwise you may need to cache off the $(":input) array and loop through that manually.

Please don\'t do that. It will make users hate your form, The worst thing you can do for a user friendly form is breaking the way forms usually work. Altough, if you really want to do it, you have to use a hander on each input for the enter key (key id is 13) and then focuses the next input using the focus() function. That post might help you
and You are breaking a well established UI/UX principle. It just like making your right mouse button behave like the left one. and the left like the right.