how i javascript timing control rodent stop rodent pierce events

so i have control (a map) an aspx page. i wish javascript onload setup following:

1. when rodent stops control = code




2. when rodent moves = formula (but wholly pierce longer 250 mil sec)

this works trigger formula stop following move...

function setupmousemovement() {
var map1 = document.getelementbyid('map_panel');
var map = document.getelementbyid('map1');
map1.onmousemove = (function() {
    var onmousestop = function() {
            //code stop
    }, thread;

    relapse function() {
        //code rodent move
        cleartimeout(thread);
        thread = settimeout(onmousestop, 25);
    };
    })();
};

but i can't figure out broach check pierce code. i guess i this...

function setupmousemovement() {
var map1 = document.getelementbyid('map_panel');
var map = document.getelementbyid('map1');
map1.onmousemove = (function() {
    var onmousestop = function() {
            //code stop
            cleartimeout(thread2);
    }, thread;

    relapse function() {
        thread2 = settimeout("code rodent move", 250);
        cleartimeout(thread);
        thread = settimeout(onmousestop, 25);
    };
    })();
};

but does act i guess would. pierce "thread2" never privileged stop. am i missing?