As Felix says, this requires JavaScript. It would be something like:
<script type="text/javascript">
window.addEventListener("load", function()
{
document.getElementById("myForm").addEventListener("submit", function()
{
var id = document.getElementById("id").value;
var name = document.getElementById("name").value;
window.location = [window.location.replace(/\/$/, ''), id, name].join("/");
}, false);
}, false);
</script>
<form action = "" id = "myForm" method = "get">
<input type = "text" name = "id" id = "id" value = "3" />
<input type = "text" name = "name" id = "name" value = "gloris" />
<input type = "submit" class = "button_big" name = "submit" id = "submit" value = "SEND" />
</form>
Note that I added id attributes so we can use document.getElementById. Also, there is no input type "input". It should be text, or you can leave it off. You can add more fields just be adding to the array in the desired order.