/** Banner Ad Rotater v3.02 **/

function Banner (refreshTime, width, height, altText, start, random)
{
    this.objName = "bannerAd" + (Banner.count++);
    eval(this.objName + "=this");

    if (!refreshTime)
        this.refreshTime = 5000;
    else
        this.refreshTime = refreshTime*1000;

    if (!width)
        this.width = 420;
    else
        this.width = width;

    if (!height)
        this.height = 130;
    else
        this.height = height;

    if (random == null)
        this.random = 1;
    else
        this.random = random;

    this.altText = altText;
    this.ads = [];

    if (start)
        this.currentAd = start-1;
    else
        start = null;

    this.mySize = 0;

    this.Ad = function(src)
    {
        var tempImage = new Image();
        tempImage.src = src;
        this.ads[this.mySize] = new Object();
        var ad = this.ads[this.mySize];
        ad.src = src;
        this.mySize++;
    }

    this.randomAd = function()
    {
        var n;
	do { n = Math.floor(Math.random() * (this.mySize)); }
	while(n == this.currentAd);
	this.currentAd = n;
    }

    this.output = function()
    {
        var tempCode = "";
	if (this.mySize > 1)
        {
            if (this.currentAd == null)
                this.randomAd();
            if (this.currentAd >= this.mySize)
                this.currentAd = this.mySize - 1;

            tempCode = '<img src="' + this.ads[this.currentAd].src + '" width="' + this.width;
            tempCode += '" name="' + this.objName + 'Img" height="' + this.height + '" ';

            if (this.altText)
                tempCode += 'alt="'+this.altText + '" ';

            tempCode += 'border="0" />';
            document.write(tempCode);
            this.nextAd();
        } else
            document.write("Error: two banners must be defined for the script to work.");
    }

    this.newAd = function()
    {
        if (!this.random)
        {	
            this.currentAd++;
            if (this.currentAd >= this.mySize)
                this.currentAd = 0;
        } else
        {
            this.randomAd();
        }
        this.nextAd();
    }


    this.nextAd = function()
    {
        document.images[this.objName+ 'Img'].src = this.ads[this.currentAd].src;
        setTimeout(this.objName+'.newAd()',this.refreshTime)
    }
}

Banner.count = 0;