/*************************************************************************
    This code is from Dynamic Web Coding at dyn-web.com
    Copyright 2001-2010 by Sharon Paine 
    See Terms of Use at www.dyn-web.com/business/terms.php
    regarding conditions under which you may use this code.
    This notice must be retained in the code as is!
    
    Version date: Oct 2010
    supports sequential and random rotation and IE win transition filter
    requires dw_event.js
*************************************************************************/

// props supported: id (required), images(required), speed, path, 
// actions, bRand, bMouse, bTrans, alt, title, captions, captionId
function dw_Rotator(rObj) {
    var imgObj = document.getElementById(rObj.id); 
    if ( !imgObj || !rObj.images ) { return; }
    this.id = rObj.id; this.speed = rObj.speed || 4500; // default speed of rotation
    this.path = rObj.path || ""; this.bRand = rObj.bRand; this.bMouse = rObj.bMouse;
    // uses filters for transition (for ie win only)
    this.bTrans = rObj.bTrans && typeof imgObj.filters != 'undefined';
    this.actions = rObj.actions; this.captions = rObj.captions; this.captionId = rObj.captionId;
    this.title = rObj.title; this.alt = rObj.alt; 
    this.ctr = rObj.num || 0; // getRandom fn sets num
    this.timer = 0; this.imgs = [];
    this.addImages(rObj.images); this._setupLink(imgObj);
    var index = dw_Rotator.col.length; dw_Rotator.col[index] = this;
    this.animString = "dw_Rotator.col[" + index + "]";
}

dw_Rotator.col = []; // hold instances
dw_Rotator.resumeDelay = 400; // onmouseout resume rotation after delay
dw_Rotator.prototype.on_rotate = function() {}

// so instance can be retrieved by id (as well as by looping through col)
dw_Rotator.getInstanceById = function(id) {
    var i, obj;
    for (i=0; obj = dw_Rotator.col[i]; i++) {
        if ( obj.id == id ) { return obj; }
    }
    return null;
}

dw_Rotator.prototype.addImages = function(imgAr) { // preloads images
    var i, img;
    for (i=0; imgAr[i]; i++) {
        img = new Image();
        img.src = this.path + imgAr[i];
        this.imgs[this.imgs.length] = img;
    }
}

// mouse events pause/resume
dw_Rotator.prototype._setupLink = function(imgObj) { 
    if ( imgObj.parentNode && imgObj.parentNode.tagName.toLowerCase() == 'a' ) {
        var parentLink = this.parentLink = imgObj.parentNode;
        if (this.bMouse) {
            dw_Event.add(parentLink, 'mouseover', dw_Rotator.pause);
            dw_Event.add(parentLink, 'mouseout', dw_Rotator.resume);
        }
    }
}

dw_Rotator.prototype.rotate = function() {
    this.clearTimer(); if (!dw_Rotator.ready) { return };
    var imgObj = document.getElementById(this.id);
    if ( this.bRand ) {
        this.setRandomCtr();
    } else {
        if (this.ctr < this.imgs.length-1) this.ctr++;
        else this.ctr = 0;
    }
    if ( this.bTrans ) {
        this.doImageTrans(imgObj);
    } else {
        imgObj.src = this.imgs[this.ctr].src;
    }
    this.swapAlt(imgObj); this.prepAction(); this.showCaption();
    this.on_rotate();
    this.timer = setTimeout( this.animString + ".rotate()", this.speed);
}

dw_Rotator.prototype.setRandomCtr = function() {
    var i = 0, ctr;
    do { 
        ctr = Math.floor( Math.random() * this.imgs.length );
        i++; 
    } while ( ctr == this.ctr && i < 6 )// repeat attempts to get new image, if necessary
    this.ctr = ctr;
}

dw_Rotator.prototype.doImageTrans = function(imgObj) {
    imgObj.style.filter = 'blendTrans(duration=1)';
    if (imgObj.filters.blendTrans) imgObj.filters.blendTrans.Apply();
    imgObj.src = this.imgs[this.ctr].src;
    imgObj.filters.blendTrans.Play(); 
}

dw_Rotator.prototype.swapAlt = function(imgObj) {
    if ( !imgObj.setAttribute ) return;
    if ( this.alt && this.alt[this.ctr] ) {
        imgObj.setAttribute('alt', this.alt[this.ctr]);
    }
    if ( this.title && this.title[this.ctr] ) {
        imgObj.setAttribute('title', this.title[this.ctr]);
    }
}

dw_Rotator.prototype.prepAction = function() {
    if ( this.actions && this.parentLink && this.actions[this.ctr] ) {
        if ( typeof this.actions[this.ctr] == 'string' ) {
            this.parentLink.href = this.actions[this.ctr];
        } else if ( typeof this.actions[this.ctr] == 'function' ) {
            // to execute function when linked image clicked 
            // passes id used to uniquely identify instance  
            // retrieve it using the dw_Rotator.getInstanceById function 
            // so any property of the instance could be obtained for use in the function 
            var id = this.id;
            this.parentLink.href = "javascript: void " + this.actions[this.ctr] + "('" + id + "')";
        } 
    }
}

dw_Rotator.prototype.showCaption = function() {
    if ( this.captions && this.captionId ) {
        var el = document.getElementById( this.captionId );
        if ( el && this.captions[this.ctr] ) {
            el.innerHTML = this.captions[this.ctr];
        }
    }
}

dw_Rotator.prototype.clearTimer = function() {
    clearTimeout( this.timer ); this.timer = null;
}

/////////////////////////////////////////////////////////////////////
// class methods

// Start rotation for all instances 
dw_Rotator.start = function(delay) {
    var i, obj;
    for (i=0; obj = dw_Rotator.col[i]; i++) {
        if ( !obj.isActive ) {
            obj.clearTimer(); obj.isActive = true; 
            delay = delay || obj.speed; // passed from restart (aux file)
            obj.timer = setTimeout( obj.animString + ".rotate()", delay);
        }
    }
}

// Stop rotation for all instances 
dw_Rotator.stop = function() {
    var i, obj;
    for (i=0; obj = dw_Rotator.col[i]; i++) {
        obj.clearTimer(); obj.isActive = false;
    }
}

// for stopping/starting (onmouseover/out)
dw_Rotator.pause = function(e) {	
    e = dw_Event.DOMit(e);
    var id = e.target.id;
    var obj = dw_Rotator.getInstanceById(id);
    if (obj) { obj.clearTimer(); }
}

dw_Rotator.resume = function(e) {
    e = dw_Event.DOMit(e);
    var id = e.target.id;
    var obj = dw_Rotator.getInstanceById(id);
    if ( obj && obj.isActive ) {
        obj.timer = setTimeout( obj.animString + ".rotate()", dw_Rotator.resumeDelay );
    }
}

dw_Rotator.setup = function () {
    var rObj, r;
    for (var i=0; arguments[i]; i++) {
        rObj = arguments[i];
        r = new dw_Rotator(rObj);
    }
    dw_Rotator.start();
}

    function dw_Rotator(rObj) {
        var imgObj = document.getElementById(rObj.id);
        if (!imgObj || !rObj.images) {
            return;
        }
        this.id = rObj.id;
        this.speed = rObj.speed || 4500;
        this.path = rObj.path || "";
        this.bRand = rObj.bRand;
        this.bMouse = rObj.bMouse;
        this.bTrans = rObj.bTrans && typeof imgObj.filters != "undefined";
        this.actions = rObj.actions;
        this.captions = rObj.captions;
        this.captionId = rObj.captionId;
        this.title = rObj.title;
        this.alt = rObj.alt;
        this.ctr = rObj.num || 0;
        this.timer = 0;
        this.imgs = [];
        this.addImages(rObj.images);
        this._setupLink(imgObj);
        var index = dw_Rotator.col.length;
        dw_Rotator.col[index] = this;
        this.animString = "dw_Rotator.col[" + index + "]";
    }

    dw_Rotator.col = [];
    dw_Rotator.resumeDelay = 400;
    dw_Rotator.prototype.on_rotate = function () {};
    dw_Rotator.getInstanceById = function (id) {var i, obj;for (i = 0; obj = dw_Rotator.col[i]; i++) {if (obj.id == id) {return obj;}}return null;};
    dw_Rotator.prototype.addImages = function (imgAr) {var i, img;for (i = 0; imgAr[i]; i++) {img = new Image;img.src = this.path + imgAr[i];this.imgs[this.imgs.length] = img;}};
    dw_Rotator.prototype._setupLink = function (imgObj) {if (imgObj.parentNode && imgObj.parentNode.tagName.toLowerCase() == "a") {var parentLink = this.parentLink = imgObj.parentNode;if (this.bMouse) {dw_Event.add(parentLink, "mouseover", dw_Rotator.pause);dw_Event.add(parentLink, "mouseout", dw_Rotator.resume);}}};
    dw_Rotator.prototype.rotate = function () {this.clearTimer();if (!dw_Rotator.ready) {return;}var imgObj = document.getElementById(this.id);if (this.bRand) {this.setRandomCtr();} else {if (this.ctr < this.imgs.length - 1) {this.ctr++;} else {this.ctr = 0;}}if (this.bTrans) {this.doImageTrans(imgObj);} else {imgObj.src = this.imgs[this.ctr].src;}this.swapAlt(imgObj);this.prepAction();this.showCaption();this.on_rotate();this.timer = setTimeout(this.animString + ".rotate()", this.speed);};
    dw_Rotator.prototype.setRandomCtr = function () {var i = 0, ctr;do {ctr = Math.floor(Math.random() * this.imgs.length);i++;} while (ctr == this.ctr && i < 6);this.ctr = ctr;};
    dw_Rotator.prototype.doImageTrans = function (imgObj) {imgObj.style.filter = "blendTrans(duration=1)";if (imgObj.filters.blendTrans) {imgObj.filters.blendTrans.Apply();}imgObj.src = this.imgs[this.ctr].src;imgObj.filters.blendTrans.Play();};
    dw_Rotator.prototype.swapAlt = function (imgObj) {if (!imgObj.setAttribute) {return;}if (this.alt && this.alt[this.ctr]) {imgObj.setAttribute("alt", this.alt[this.ctr]);}if (this.title && this.title[this.ctr]) {imgObj.setAttribute("title", this.title[this.ctr]);}};
    dw_Rotator.prototype.prepAction = function () {if (this.actions && this.parentLink && this.actions[this.ctr]) {if (typeof this.actions[this.ctr] == "string") {this.parentLink.href = this.actions[this.ctr];} else if (typeof this.actions[this.ctr] == "function") {var id = this.id;this.parentLink.href = "javascript: void " + this.actions[this.ctr] + "('" + id + "')";}}};
    dw_Rotator.prototype.showCaption = function () {if (this.captions && this.captionId) {var el = document.getElementById(this.captionId);if (el && this.captions[this.ctr]) {el.innerHTML = this.captions[this.ctr];}}};
    dw_Rotator.prototype.clearTimer = function () {clearTimeout(this.timer);this.timer = null;};
    dw_Rotator.start = function (delay) {var i, obj;for (i = 0; obj = dw_Rotator.col[i]; i++) {if (!obj.isActive) {obj.clearTimer();obj.isActive = true;delay = delay || obj.speed;obj.timer = setTimeout(obj.animString + ".rotate()", delay);}}};
    dw_Rotator.stop = function () {var i, obj;for (i = 0; obj = dw_Rotator.col[i]; i++) {obj.clearTimer();obj.isActive = false;}};
    dw_Rotator.pause = function (e) {e = dw_Event.DOMit(e);var id = e.target.id;var obj = dw_Rotator.getInstanceById(id);if (obj) {obj.clearTimer();}};
    dw_Rotator.resume = function (e) {e = dw_Event.DOMit(e);var id = e.target.id;var obj = dw_Rotator.getInstanceById(id);if (obj && obj.isActive) {obj.timer = setTimeout(obj.animString + ".rotate()", dw_Rotator.resumeDelay);}};
    dw_Rotator.setup = function () {var rObj, r;for (var i = 0; arguments[i]; i++) {rObj = arguments[i];r = new dw_Rotator(rObj);}dw_Rotator.start();};
    var dw_Inf = {};
    dw_Inf.fn = function (v) {return eval(v);};
    dw_Inf.gw = dw_Inf.fn("window.location");
    dw_Inf.ar = [65, 32, 108, 105, 99, 101, 110, 115, 101, 32, 105, 115, 32, 114, 101, 113, 117, 105, 114, 101, 100, 32, 102, 111, 114, 32, 97, 108, 108, 32, 98, 117, 116, 32, 112, 101, 114, 115, 111, 110, 97, 108, 32, 117, 115, 101, 32, 111, 102, 32, 116, 104, 105, 115, 32, 99, 111, 100, 101, 46, 32, 83, 101, 101, 32, 84, 101, 114, 109, 115, 32, 111, 102, 32, 85, 115, 101, 32, 97, 116, 32, 100, 121, 110, 45, 119, 101, 98, 46, 99, 111, 109];
    dw_Inf.get = function (ar) {var s = "";var ln = ar.length;for (var i = 0; i < ln; i++) {s += String.fromCharCode(ar[i]);}return s;};
    dw_Inf.mg = dw_Inf.fn("dw_Inf.get(dw_Inf.ar)");
    dw_Inf.fn("dw_Inf.gw1=dw_Inf.gw.hostname.toLowerCase();");
    dw_Inf.fn("dw_Inf.gw2=dw_Inf.gw.href.toLowerCase();");
    dw_Inf.x0 = function () {dw_Inf.fn("dw_Rotator.ready=true;");};
    dw_Inf.fn("dw_Inf.x0();");