﻿function briaskISS(idModule, random, picInterval, transDelay, picArray) {
    this.picRandom = random;
    this.picInterval = picInterval;
    this.transDelay = transDelay;
    this.picArray = picArray;

    this.curPic = 0;
    this.nextPic = 0;
    this.numPics = 0;
    this.curOpacity = 99
    this.nextOpacity = 0;

    this.idModule = idModule;

    this.initISS();
}

briaskISS.prototype.initISS = function () {
    if (!document.getElementById || !document.createElement) return;

    this.picArray[0]
		= document.getElementById("briask-iss" + this.idModule).getElementsByTagName("img");

    this.numPics = this.picArray[0].length;

    for (i = 0; i < this.picArray[0].length; i++) {
        this.picArray[0][i].opacity = 0;
        this.picArray[0][i].style.MozOpacity = .0;
        this.picArray[0][i].style.filter = "alpha(opacity=0)";
    }

    if (this.picRandom == 3) {
        this.issNextPic();
    }

    this.picArray[0][this.nextPic].style.display = "block";
    this.picArray[0][this.nextPic].style.opacity = .99;
    this.picArray[0][this.nextPic].style.MozOpacity = .99;
    this.picArray[0][this.nextPic].style.filter = "alpha(opacity=" + (.99 * 100) + ")";

    this.curPic = this.nextPic;
    setTimeout("briaskInstance" + this.idModule + ".issShow()", this.picInterval);
}

briaskISS.prototype.issShow = function () {
    this.issNextPic();

    this.curOpacity = 100, this.nextOpacity = 0;

    setTimeout("briaskInstance" + this.idModule + ".issTransition()", this.transDelay);
}

briaskISS.prototype.issNextPic = function () {
    if (this.picRandom < 3) {
        if (this.curPic < (this.numPics - 1)) {
            this.nextPic = this.curPic + 1;
        }
        else {
            this.nextPic = 0;
        }
    }
    else {
        do {
            now = new Date();

            var rndPic = Math.ceil(this.numPics * Math.random(this.idModule)) - 1;

        } while (this.curPic == rndPic)

        this.nextPic = rndPic;
    }
}

briaskISS.prototype.issTransition = function () {
    if (this.picArray[0][this.nextPic])
    {
        this.picArray[0][this.nextPic].style.display = "block";

        this.picArray[0][this.curPic].style.opacity = this.curOpacity / 100;
        this.picArray[0][this.curPic].style.MozOpacity = this.curOpacity / 100;
        this.picArray[0][this.curPic].style.filter = "alpha(opacity=" + (this.curOpacity) + ")";

        this.picArray[0][this.nextPic].style.opacity = this.nextOpacity / 100;
        this.picArray[0][this.nextPic].style.MozOpacity = this.nextOpacity / 100;
        this.picArray[0][this.nextPic].style.filter = "alpha(opacity=" + (this.nextOpacity) + ")";

        if (this.curOpacity > 0) {
            this.curOpacity -= 4;
            this.nextOpacity += 4;
            setTimeout("briaskInstance" + this.idModule + ".issTransition()", this.transDelay);
        }
        else {
            this.picArray[0][this.curPic].style.display = "none";

            this.curPic = this.nextPic;
            setTimeout("briaskInstance" + this.idModule + ".issShow()", this.picInterval);
        }
    }
}
