var howMany = Pix.length;
var PicCurrentNum = 0;
var PicCurrent = new Image();
var intervalId = 0;
PicCurrent.src = Pix[PicCurrentNum];
PicCurrent.alt = Altz[PicCurrentNum];

function changeSlide(num) {
PicCurrentNum=num;
PicCurrent.src = Pix[num];
document['ChangingPix'].src = PicCurrent.src;
document['ChangingPix'].alt = PicCurrent.alt;
document['ChangingPix'].useMap= '#map' + num;
}