var intPos = 0;
var intOpacity = 100;
var speed = 200;
var rotateSpeed = 10000;
var autoRotateTimer = null;

function getStyleObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) {
    return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
    return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
        return getObjNN4(document,objectId);
    } else {
    return false;
    }
}

function changeImg(){
    var old_image = document.getElementById("old_image");
    var new_image = document.getElementById("new_image");

    var old_text = document.getElementById("old_text");
    var new_text = document.getElementById("new_text");

    var old_image_href = document.getElementById("old_image_href");
    var new_image_href = document.getElementById("new_image_href");

    old_image.src = new_image.src;
    old_image.style.paddingTop = new_image.style.paddingTop;

    if (new_image.alt != null)
        old_image.alt = new_image.alt;

    if (old_text != null && new_text != null)
        old_text.innerHTML = new_text.innerHTML;

	/* Don't change the URL
    if (old_image_href != null && new_image_href != null) {
        old_image_href.href = new_image_href.href;
		new_image_href.href = arrImgs[this.intPos].src.substring(arrImgs[this.intPos].src.indexOf('&i=')+3);
	}
	*/

    changeOpacity(100, 'old_image');
    changeOpacity(0, 'new_image');

    new_image.src = arrImgs[this.intPos].src;
    if (arrImgs[this.intPos].alt != null)
        new_image.alt = arrImgs[this.intPos].alt;
    else
        new_image.alt = "";

    if (new_text != null && arrImgs[this.intPos].text != null)
        new_text.innerHTML = arrImgs[this.intPos].text;

}

function nextImg(auto){
    this.intPos++;
    if(this.intPos >= arrImgs.length){
        this.intPos = 0;
    }

    switchImg(this.intPos, auto);
}

function prevImg(auto){
    this.intPos--;
    if(this.intPos < 0){
        this.intPos = arrImgs.length - 1;
    }

    switchImg(this.intPos, auto);
}

function doSlide(intNewOpacity, img){
    changeOpacity(intNewOpacity, img);

    if(this.intOpacity - 2 >= 0){
        this.intOpacity -= 2;
        setTimeout("doSlide(this.intOpacity, 'old_image')", this.speed);
        setTimeout("doSlide(100 - this.intOpacity, 'new_image')", this.speed);
    }
    else {
        changeOpacity(0, 'old_image');
        changeOpacity(100, 'new_image');
    }
}

function changeOpacity(intNewOpacity, strDiv){
    var divStyle = getStyleObject(strDiv);

    divStyle.opacity = (intNewOpacity / 100);
    divStyle.MozOpacity = (intNewOpacity / 100);
    divStyle.KhtmlOpacity = (intNewOpacity / 100);
    if(intNewOpacity == 100){
        divStyle.filter = null;
    }
    else{
        divStyle.filter = 'alpha(opacity=' + intNewOpacity + ')';
    }
}

function switchImg(pos, auto){

    if (!auto) {
        clearTimeout(this.autoRotateTimer);
    }
    else
        this.autoRotateTimer = setTimeout("nextImg(true)", this.rotateSpeed);

    this.intPos = pos;

    changeImg();

    this.intOpacity = 100;


	if (document.getElementById("select0")) {
	    for(var x = 0; x < arrImgs.length; x++)
	    {
	        document.getElementById("select" + x).className = 'imageoption';
	    }
	        document.getElementById("select" + pos).className = 'imageoption selected';
	}
    setTimeout('doSlide(' + this.intOpacity + ')', this.speed);

}

function autoRotate() {
    this.autoRotateTimer = setTimeout("nextImg(true)", this.rotateSpeed);
}