Code woes

I am trying to use the preloader component (components set 2) within flash mx. The code I have so far is:

The preloader has the instance pre_load_pic1.

_root.pre_load_pic1.setLoadTarget(“pic1.jpg”);

_root.pre_load_pic1.setChangeHandler(load_pic1);

_root.hit2.onPress = function() {
myInterval = setInterval(load_pic1, 100);
};

function load_pic1() {
if (pre_load_pic1.getPercentComplete()>=99) {
loadMovie(“pic1.jpg”, _root.holder);
clearInterval(myInterval);
}
}

Unfortunately the preload bar does nowt even though the jpeg does load into the browser.

Can anyone help out?