var HSA_scrollAreas = new Array();

var HSA_default_imagesPath = "/cmsglobalfiles/asics/images";
var HSA_default_btnLeftImage = "btn-left.gif";
var HSA_default_btnRightImage = "btn-right.gif";
var HSA_default_scrollStep = 5;
var HSA_default_wheelSensitivity = 10;
var HSA_default_scrollbarPosition = 'bottom'; //'top';//'bottom';'inline';
var HSA_default_scrollButtonWidth = 20;
var HSA_default_scrollbarHeight = 11;

var HSA_resizeTimer = 200;

if (window.addEventListener)
    window.addEventListener("load", HSA_initScrollbars, false);
else if (window.attachEvent)
    window.attachEvent("onload", HSA_initScrollbars);

function HSA_initScrollbars() {
    var scrollElements = HSA_getElements("scrollable", "DIV", document, "class");
    for (var i = 0; i < scrollElements.length; i++) {
        HSA_scrollAreas[i] = new ScrollArea(i, scrollElements[i]);
    }
}

function ScrollArea(index, elem) //constructor
{
    this.index = index;
    this.element = elem;

    var attr = this.element.getAttribute("imagesPath");
    this.imagesPath = attr ? attr : HSA_default_imagesPath;

    attr = this.element.getAttribute("btnLeftImage");
    this.btnLeftImage = attr ? attr : HSA_default_btnLeftImage;

    attr = this.element.getAttribute("btnRightImage");
    this.btnRightImage = attr ? attr : HSA_default_btnRightImage;

    attr = Number(this.element.getAttribute("scrollStep"));
    this.scrollStep = attr ? attr : HSA_default_scrollStep;

    attr = Number(this.element.getAttribute("wheelSensitivity"));
    this.wheelSensitivity = attr ? attr : HSA_default_wheelSensitivity;

    attr = this.element.getAttribute("scrollbarPosition");
    this.scrollbarPosition = attr ? attr : HSA_default_scrollbarPosition;

    attr = this.element.getAttribute("scrollButtonWidth");
    this.scrollButtonWidth = attr ? attr : HSA_default_scrollButtonWidth;

    attr = this.element.getAttribute("scrollbarHeight");
    this.scrollbarHeight = attr ? attr : HSA_default_scrollbarHeight;

    this.scrolling = false;

    this.iOffsetX = 0;
    this.scrollWidth = 0;
    this.scrollContent = null;
    this.scrollbar = null;
    this.scrollleft = null;
    this.scrollright = null;
    this.scrollslider = null;
    this.scroll = null;
    this.enableScrollbar = false;
    this.scrollFactor = 1;
    this.scrollingLimit = 0;
    this.leftPosition = 0;

    //functions declaration
    this.init = HSA_init;
    this.scrollLeft = HSA_scrollLeft;
    this.scrollRight = HSA_scrollRight;
    this.createScrollBar = HSA_createScrollBar;
    this.scrollIt = HSA_scrollIt;

    this.init();

}


function HSA_init() {


    this.scrollContent = document.createElement("DIV");
    this.scrollContent.style.position = "absolute";
    this.scrollContent.style.width = this.element.offsetWidth + "px";
    this.scrollContent.style.height = this.element.offsetHeight + "px";
    this.scrollContent.innerHTML = this.element.innerHTML;
    this.scrollContent.style.overflow = "hidden";

    this.element.innerHTML = "";

    this.element.style.overflow = "hidden";
    this.element.style.display = "block";
    this.element.style.visibility = "visible";
    this.element.style.position = "relative";
    this.element.appendChild(this.scrollContent);

    this.scrollContent.className = 'scroll-content';

    this.element.index = this.index;
    this.element.over = false;

    var _this = this;
    this.element.onmouseover = function() {
        _this.element.over = true;
    };
    this.element.onmouseout = function() {
        _this.element.over = false;
    }

    if (document.all) {
        this.element.onscroll = HSA_handleOnScroll;
        this.element.onresize = HSA_handleResize;
    }
    else {
        window.onresize = HSA_handleResize;
    }

    this.createScrollBar();
    if (window.addEventListener)
    /** DOMMouseScroll is for mozilla. */
        this.element.addEventListener('DOMMouseScroll', HSA_handleMouseWheel, false);
    /** IE/Opera. */
    this.element.onmousewheel = document.onmousewheel = HSA_handleMouseWheel;

}

function HSA_createScrollBar() {

    if (this.scrollbar != null) {
        this.element.removeChild(this.scrollbar);
        this.scrollbar = null;
    }


    if (this.scrollContent.scrollWidth <= this.scrollContent.offsetWidth)
        this.enableScrollbar = false;
    else if (this.element.offsetWidth > 2 * this.scrollButtonWidth)
        this.enableScrollbar = true;
    else
        this.enableScrollbar = false;

    if (this.scrollContent.scrollWidth - Math.abs(this.scrollContent.scrollLeft) < this.element.offsetWidth)
        this.scrollContent.style.left = 0;

    if (this.enableScrollbar) {

        this.scrollbar = document.createElement("DIV");
        this.element.appendChild(this.scrollbar);
        this.scrollbar.style.position = "absolute";
        this.scrollbar.style.left = "0px";
        this.scrollbar.style.width = this.element.offsetWidth + "px";
        this.scrollbar.style.height = this.scrollbarHeight + "px";

        this.scrollbar.className = 'hscroll-bar';

        if (this.scrollbarHeight != this.scrollbar.offsetHeight) {
            this.scrollbarHeight = this.scrollbar.offsetWidth;
        }

        this.scrollbarHeight = this.scrollbar.offsetHeight;

        if (this.scrollbarPosition == 'top') {
            this.scrollContent.style.top = this.scrollbarHeight + 5 + "px";
            this.scrollContent.style.height = this.element.offsetHeight - this.scrollbarHeight - 5 + "px";
        }
        else if (this.scrollbarPosition == 'bottom') {
            this.scrollbar.style.top = this.element.offsetHeight - this.scrollbarHeight + "px";
            this.scrollContent.style.height = this.element.offsetHeight - this.scrollbarHeight - 5 + "px";
        }


        //create scroll up button
        this.scrollleft = document.createElement("DIV");
        this.scrollleft.index = this.index;
        this.scrollleft.onmousedown = HSA_handleBtnLeftMouseRight;
        this.scrollleft.onmouseup = HSA_handleBtnLeftMouseLeft;
        this.scrollleft.onmouseout = HSA_handleBtnLeftMouseOut;
        this.scrollleft.style.position = "absolute";
        this.scrollleft.style.left = "0px";
        this.scrollleft.style.width = this.scrollButtonWidth + "px";
        this.scrollleft.style.height = this.scrollbarHeight + "px";

        this.scrollleft.innerHTML = '<img src="' + this.imagesPath + '/' + this.btnLeftImage + '" border="0"/>';
        this.scrollbar.appendChild(this.scrollleft);

        this.scrollleft.className = 'hscroll-left';

        if (this.scrollButtonWidth != this.scrollleft.offsetWidth) {
            this.scrollButtonWidth = this.scrollleft.offsetWidth;
        }

        //create scroll down button
        this.scrollright = document.createElement("DIV");
        this.scrollright.index = this.index;
        this.scrollright.onmousedown = HSA_handleBtnRightMouseRight;
        this.scrollright.onmouseup = HSA_handleBtnRightMouseLeft;
        this.scrollright.onmouseout = HSA_handleBtnRightMouseOut;
        this.scrollright.style.position = "absolute";
        this.scrollright.style.left = this.scrollbar.offsetWidth - this.scrollButtonWidth + "px";
        this.scrollright.style.height = this.scrollbarHeight + "px";
        this.scrollright.innerHTML = '<img src="' + this.imagesPath + '/' + this.btnRightImage + '" border="0"/>';
        this.scrollbar.appendChild(this.scrollright);

        this.scrollright.className = 'hscroll-right';


        //create scroll
        this.scroll = document.createElement("DIV");
        this.scroll.index = this.index;
        this.scroll.style.position = "absolute";
        this.scroll.style.zIndex = 0;
        this.scroll.style.textAlign = "center";
        this.scroll.style.left = this.scrollButtonWidth + "px";
        this.scroll.style.height = this.scrollbarHeight + "px";

        var h = this.scrollbar.offsetWidth - 2 * this.scrollButtonWidth;
        this.scroll.style.width = ((h > 0) ? h : 0) + "px";

        this.scroll.innerHTML = '';
        this.scroll.onclick = HSA_handleScrollbarClick;
        this.scrollbar.appendChild(this.scroll);
        this.scroll.style.overflow = "hidden";

        this.scroll.className = "hscroll-line";

        //create slider
        this.scrollslider = document.createElement("DIV");
        this.scrollslider.index = this.index;
        this.scrollslider.style.position = "absolute";
        this.scrollslider.style.zIndex = 1000;
        this.scrollslider.style.textAlign = "center";
        this.scrollslider.innerHTML = '<div id="scrollslider' + this.index + '" style="padding:0;margin:0;"><div class="scroll-bar-left"></div><div class="scroll-bar-right"></div></div>';
        this.scrollbar.appendChild(this.scrollslider);

        this.subscrollslider = document.getElementById("scrollslider" + this.index);
        this.subscrollslider.style.width = Math.round((this.scrollContent.offsetWidth / this.scrollContent.scrollWidth) * (this.scrollbar.offsetWidth - 2 * this.scrollButtonWidth)) + "px";

        this.scrollslider.className = "hscroll-slider";

        this.scrollWidth = this.scrollbar.offsetWidth - 2 * this.scrollButtonWidth - this.scrollslider.offsetWidth;
        this.scrollFactor = (this.scrollContent.scrollWidth - this.scrollContent.offsetWidth) / this.scrollWidth;
        this.leftPosition = getRealLeft(this.scrollbar) + this.scrollButtonWidth;
        /* this.scrollbarWidth = this.scrollbar.offsetWidth - 2*this.scrollButtonWidth - this.scrollslider.offsetWidth; */

        this.scrollslider.style.left = /* 1 / this.scrollFactor * Math.abs(this.scrollContent.offsetTop) +*/this.scrollButtonWidth + "px";
        this.scrollslider.style.height = "100%";
        this.scrollslider.onmousedown = HSA_handleSliderMouseDown;
        if (document.all)
            this.scrollslider.onmouseup = HSA_handleSliderMouseLeft;
    }
    else
        this.scrollContent.style.height = this.element.offsetHeight + "px";
}

function HSA_handleBtnLeftMouseRight() {
    var sa = HSA_scrollAreas[this.index];
    sa.scrolling = true;
    sa.scrollLeft();
}

function HSA_handleBtnLeftMouseLeft() {
    HSA_scrollAreas[this.index].scrolling = false;
}

function HSA_handleBtnLeftMouseOut() {
    HSA_scrollAreas[this.index].scrolling = false;
}

function HSA_handleBtnRightMouseRight() {
    var sa = HSA_scrollAreas[this.index];
    sa.scrolling = true;
    sa.scrollRight();
}

function HSA_handleBtnRightMouseLeft() {
    HSA_scrollAreas[this.index].scrolling = false;
}

function HSA_handleBtnRightMouseOut() {
    HSA_scrollAreas[this.index].scrolling = false;
}

function HSA_scrollIt() {
    this.scrollContent.scrollLeft = this.scrollFactor * ((this.scrollslider.offsetLeft + this.scrollslider.offsetWidth / 2) - this.scrollButtonWidth - this.scrollslider.offsetWidth / 2);
}

function HSA_scrollLeft() {
    if (this.scrollingLimit > 0) {
        this.scrollingLimit--;
        if (this.scrollingLimit == 0) this.scrolling = false;
    }
    if (!this.scrolling) return;
    if (this.scrollContent.scrollLeft - this.scrollStep > 0) {
        this.scrollContent.scrollLeft -= this.scrollStep;
        this.scrollslider.style.left = 1 / this.scrollFactor * Math.abs(this.scrollContent.scrollLeft) + this.scrollButtonWidth + "px";
    }
    else {
        this.scrollContent.scrollLeft = "0";
        this.scrollslider.style.left = this.scrollButtonWidth + "px";
        return;
    }
    setTimeout("HSA_Ext_scrollLeft(" + this.index + ")", 30);
}

function HSA_Ext_scrollLeft(index) {
    HSA_scrollAreas[index].scrollLeft();
}

function HSA_scrollRight() {
    if (this.scrollingLimit > 0) {
        this.scrollingLimit--;
        if (this.scrollingLimit == 0) this.scrolling = false;
    }
    if (!this.scrolling) return;


    this.scrollContent.scrollLeft += this.scrollStep;
    this.scrollslider.style.left = 1 / this.scrollFactor * Math.abs(this.scrollContent.scrollLeft) + this.scrollButtonWidth + "px";

    if (this.scrollContent.scrollLeft >= (this.scrollContent.scrollWidth - this.scrollContent.offsetWidth)) {
        this.scrollContent.scrollLeft = (this.scrollContent.scrollWidth - this.scrollContent.offsetWidth);
        this.scrollslider.style.left = this.scrollbar.offsetWidth - this.scrollButtonWidth - this.scrollslider.offsetWidth + "px";
        return;
    }

    setTimeout("HSA_Ext_scrollRight(" + this.index + ")", 30);
}

function HSA_Ext_scrollRight(index) {
    HSA_scrollAreas[index].scrollRight();
}

function HSA_handleMouseMove(evt) {
    var sa = HSA_scrollAreas[((document.all && !window.opera) ? this.index : document.documentElement.scrollAreaIndex)];
    var posy = 0;
    if (!evt) var evt = window.event;

    if (evt.pageX)
        posy = evt.pageX;
    else if (evt.clientX)
        posy = evt.clientX;

    if (document.all && !window.opera) {
        posy += document.documentElement.scrollLeft;
    }

    var iNewY = posy - sa.iOffsetX - sa.leftPosition;
    iNewY += sa.scrollButtonWidth;

    if (iNewY < sa.scrollButtonWidth)
        iNewY = sa.scrollButtonWidth;
    if (iNewY > (sa.scrollbar.offsetWidth - sa.scrollButtonWidth) - sa.scrollslider.offsetWidth)
        iNewY = (sa.scrollbar.offsetWidth - sa.scrollButtonWidth) - sa.scrollslider.offsetWidth;

    sa.scrollslider.style.left = iNewY + "px";

    sa.scrollIt();
}

function HSA_handleSliderMouseDown(evt) {
    if (!(document.uniqueID && document.compatMode && !window.XMLHttpRequest)) {
        document.onselectstart = function() { return false; }
        document.onmousedown = function() { return false; }
    }
    var sa = HSA_scrollAreas[this.index];
    if (document.all && !window.opera) {
        sa.scrollslider.setCapture()
        sa.iOffsetX = event.offsetX;
        sa.scrollslider.onmousemove = HSA_handleMouseMove;
    }
    else {
        if (window.opera) {
            sa.iOffsetX = event.offsetX;
        }
        else {
            sa.iOffsetX = evt.layerX;
        }
        document.documentElement.scrollAreaIndex = sa.index;
        document.documentElement.addEventListener("mousemove", HSA_handleMouseMove, true);
        document.documentElement.addEventListener("mouseup", HSA_handleSliderMouseLeft, true);
    }
}

function HSA_handleSliderMouseLeft() {
    if (!(document.uniqueID && document.compatMode && !window.XMLHttpRequest)) {
        document.onmousedown = null;
        document.onselectstart = null;
    }
    if (document.all && !window.opera) {
        var sa = HSA_scrollAreas[this.index];
        sa.scrollslider.onmousemove = null;
        sa.scrollslider.releaseCapture();
        sa.scrollIt();
    }
    else {
        var sa = HSA_scrollAreas[document.documentElement.scrollAreaIndex];
        document.documentElement.removeEventListener("mousemove", HSA_handleMouseMove, true);
        document.documentElement.removeEventListener("mouseup", HSA_handleSliderMouseLeft, true);
        sa.scrollIt();
    }
}

function HSA_handleResize() {
    if (HSA_resizeTimer) {
        clearTimeout(HSA_resizeTimer);
        HSA_resizeTimer = 0;
    }
    HSA_resizeTimer = setTimeout("HSA_performResizeEvent()", 100);
}

function HSA_performResizeEvent() {
    for (var i = 0; i < HSA_scrollAreas.length; i++)
        HSA_scrollAreas[i].createScrollBar();
}

function HSA_handleMouseWheel(event) {
    if (this.index != null) {
        var sa = HSA_scrollAreas[this.index];
        if (sa.scrollbar == null) return;
        sa.scrolling = true;
        sa.scrollingLimit = sa.wheelSensitivity;

        var delta = 0;
        if (!event) /* For IE. */
            event = window.event;
        if (event.wheelDelta) { /* IE/Opera. */
            delta = event.wheelDelta / 120;

            /*if (window.opera)
            delta = -delta;*/
        } else if (event.detail) { /** Mozilla case. */
            delta = -event.detail / 3;
        }
        if (delta && sa.element.over) {
            if (delta > 0)
                sa.scrollLeft();
            else
                sa.scrollRight();

            if (event.preventDefault)
                event.preventDefault();
            event.returnValue = false;
        }
    }
}

function HSA_handleSelectStart() {
    event.returnValue = false;
}

function HSA_handleScrollbarClick(evt) {
    var sa = HSA_scrollAreas[this.index];
    var offsetX = (document.all ? event.offsetX : evt.layerX);

    if (offsetX < (sa.scrollButtonWidth + sa.scrollslider.offsetWidth / 2))
        sa.scrollslider.style.left = sa.scrollButtonWidth + "px";
    else if (offsetX > (sa.scrollbar.offsetWidth - sa.scrollButtonWidth - sa.scrollslider.offsetWidth))
        sa.scrollslider.style.left = sa.scrollbar.offsetWidth - sa.scrollButtonWidth - sa.scrollslider.offsetWidth + "px";
    else {
        sa.scrollslider.style.left = offsetX + sa.scrollButtonWidth - sa.scrollslider.offsetWidth / 2 + "px";
    }
    sa.scrollIt();
}

function HSA_handleOnScroll() {
    event.srcElement.doScroll("pageLeft");
}

//--- common functions ----

function HSA_getElements(attrValue, tagName, ownerNode, attrName) //get Elements By Attribute Name
{
    if (!tagName) tagName = "*";
    if (!ownerNode) ownerNode = document;
    if (!attrName) attrName = "name";
    var result = [];
    var nl = ownerNode.getElementsByTagName(tagName);
    for (var i = 0; i < nl.length; i++) {
        //	if (nl.item(i).getAttribute(attrName) == attrValue)
        //		result.push(nl.item(i));
        if (nl.item(i).className.indexOf(attrValue) != -1)
            result.push(nl.item(i));
    }
    return result;
}

function getRealLeft(elem) {
    var nLeft = 0;
    if (elem) {
        do {
            nLeft += elem.offsetLeft - elem.scrollLeft;
            elem = elem.offsetParent;
        }
        while (elem)
    }
    return nLeft;
}