How to properly integrate JQuery with IP.Board?

How to properly integrate JQuery with IP.Board?

I've been having some trouble integrating a JQuery background chooser with
an IP.Board forum. I've tried including noConflict but it seems to disable
JQuery completely. The code I'm using is this:
$("#Btn").click(function(){
$("#Image").css("backgroundImage", "url('"+$("#ImageUrl").val()+"')");
});