Pc code not working in mac. Common problem?

My old site was created on a pc mcclept.com (i know i was young and thoght it was better to side with emperor B. Gates than oppose)but now i moved ot to my mac and this code does not work properly. No rhyme or reason it used to work and nothing changed other than platform.
btw it just loads jpgs from an externally source. I did it this way just for size and processing. if there is a better/easier way y’all know. Most will probably say xml but that seems very involved and at this moment my time is short
thanks

MovieClip.prototype.loadPic = function(pic) {
this.loadMovie(“http://www.mcclept.com/art/me/"+pic+".jpg”);
};
containerMC.loadPic(i);
snr = i+"/"+a;
but1._visible = false;
but1.onRelease = function() {
if (i>1) {
i–;
containerMC.loadPic(i);
snr = i+"/"+a;
but2._visible = true;
}
if (i == 1) {
but1._visible = false;
}
};
but2.onRelease = function() {
if (i<a) {
i++;
containerMC.loadPic(i);
snr = i+"/"+a;
but1._visible = true;
}
if (i == a) {
but2._visible = false;
}
};
stop();