Why this script doesn't work on jquery 1.4.2?

Why this script doesn't work on jquery 1.4.2?

I've been using a simple script for a sliding menu that worked seamlessly with jQuery 1.3 and 1.2.


When I upgraded to 1.4.2. the portion of code that moves the div off the screen doesn't work anymore. I'm not getting any error messages. Just this portion of code is ignored (or not triggered).

The code is as follows :
  1. $("#container_menu").mouseout(function(){
        $().mousemove( function(e) {
            if (e.pageY > 150) {
            if($("#pestan").css("display") == "none"){
                $("#showmenu").animate({ marginTop: "-150px" }, 500 );
                $("#pestan").css("display","block");
                $("#menuOpen").fadeIn("slow");
            }
        }
        });
    });









There is something to be modified to work in 1.4.2?

Thanks in advance