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Javascript image fader with links and random

Posted on 2014-01-24
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Last Modified: 2014-06-01
I am trying to setup a random image fader that has links.  I had the code for random image fader and was trying to add links.  I have the links and everything rendering properly, but when I try to click on one of the images, the link where I am ending up does not match the image I clicked.

Here is the full code.  
<html>
<head>

<style>
.showhand
{
    cursor:pointer;
}
</style>
<script type="text/javascript">
    var nindex = 0;
    function tFader(a_items, a_lnks, a_tpl) {

        // validate parameters and set defaults
        if (!a_items) return alert("items structure is missing");
        if (typeof (a_items) != 'object') return alert("format of the items structure is incorrect");
        if (a_items[a_items.length - 1] == null) return alert("last element of the items structure is undefined");

        if (!a_lnks) return alert("links structure is missing");
        if (typeof (a_lnks) != 'object') return alert("format of the items structure is incorrect");
        if (a_lnks[a_lnks.length - 1] == null) return alert("last element of the links structure is undefined");
        
        if (!a_tpl) a_tpl = [];
        for (var i = 0; i < A_TSLIDEDEFS.length; i += 2)
            if (a_tpl[A_TSLIDEDEFS[i]] == null)
                a_tpl[A_TSLIDEDEFS[i]] = A_TSLIDEDEFS[i + 1];

        // save config parameters in the slider object
        this.a_tpl = a_tpl;
        this.a_lnks = a_lnks;
        this.a_items = a_tpl.random ? tslide_randomize(a_items, a_lnks) : a_items;
        var items = [];
        var a_linkstest = [];
        var string1 = "";

        for (i = 0; i < this.a_items.length; i++) {
            items[i] = this.a_items[i].split("|")[0];
            a_linkstest[i] = this.a_items[i].split("|")[1];
        }

        this.a_lnks = a_linkstest;
        this.a_items = items;

        // initialize parameters, assign methods	
        this.n_currentSlide = 0;
        this.f_goto = tslide_goto;
        this.f_run = function () { this.b_running = 1; this.f_goto(); };
        this.f_stop = function () { this.b_running = 0; clearTimeout(this.o_timerS); };
        this.f_fadeIn = tslide_fadeIn;
        this.f_fadeOut = tslide_fadeOut;
        this.f_slideOp = tslide_slideOp;

        // register in the global collection	
        if (!window.A_SLIDES)
            window.A_SLIDES = [];
        this.n_id = window.A_SLIDES.length;
        window.A_SLIDES[this.n_id] = this;

        // generate control's HTML
        var s_attributes = ' '
		+ (a_tpl['css'] ? ' class="' + a_tpl['css'] + '"' : '')
		+ (a_tpl['width'] ? ' width="' + a_tpl['width'] + '"' : '')
		+ (a_tpl['height'] ? ' height="' + a_tpl['height'] + '"' : '')
		+ (a_tpl['alt'] ? ' title="' + a_tpl['alt'] + '" alt="' + a_tpl['alt'] + '"' : '');

        this.a_imgRefs = [];
        if (this.a_lnks[0].length != 0) {
            document.write('<img class="rotatorclass" src="' + this.a_items[0] + '"' + s_attributes + ' onclick="window.location.href =\'' + this.a_lnks[0] + '\';"' + ' id="tslide' + this.n_id + '_0" />');
        }
        else {
            
            document.write('<img class="rotatorclass" src="' + this.a_items[0] + '"' + s_attributes + ' name="tslide' + this.n_id + '_0" />');
            // document.write ('<img class="rotatorclass" src="', this.a_items[0] , '"', s_attributes, ' name="tslide', this.n_id, '_0" />');
        }
        this.a_imgRefs[0] = document.images['tslide' + this.n_id + '_0'];
        this.n_currentSlide = 0;

        // exit on old browsers
        if (!this.a_imgRefs[0] || !this.a_imgRefs[0].style || this.a_imgRefs[0].style.marginLeft == null)
            return;

        for (var i = 1; i < this.a_items.length; i++) {
            if (this.a_lnks.length > 1 && this.a_lnks[i].length != 0) {
                document.write('<img class="rotatorclass showhand" src="' + this.a_items[i] + '"' + s_attributes + ' onclick="window.location.href =\'' + this.a_lnks[i] + '\';"' + ' id="tslide' + this.n_id + '_' + i + '" style="position:relative;z-index:-1;filter:alpha(opacity=100);" />');
                // document.write('<img class="rotatorclass" src="', this.a_items[i] , '"', s_attributes, ' name="tslide', this.n_id, '_', i, '" style="position:relative;z-index:-1;filter:alpha(opacity=100);" />');
            }
            else {
                
                document.write('<img class="rotatorclass" src="' + this.a_items[i] + '"' + s_attributes + ' id="tslide' + this.n_id + '_' + i + '" style="position:relative;z-index:-1;filter:alpha(opacity=100);" />');
            }
            this.a_imgRefs[i] = document.images['tslide' + this.n_id + '_' + i];
            this.a_imgRefs[i].style.marginLeft = '-' + this.a_tpl.width + 'px';
            this.f_slideOp(i, 0);
            this.a_imgRefs[i].style.zIndex = i;
        }

        // calculate transition variables
        this.n_timeDec = Math.round(this.a_tpl['transtime'] * 1e3 / this.a_tpl['steps']);
        this.n_opacDec = Math.round(100 / this.a_tpl['steps']);

        // run this sucker
        this.f_run();
    }

    function tslide_goto(n_slide, b_now) {

        // cancel any scheduled transitions	
        if (this.o_timerS) {
            clearTimeout(this.o_timerS);
            this.o_timerS = null;
            if (this.n_nextSlide) {
                this.f_slideOp(this.n_nextSlide, 0);
                this.n_nextSlide = null;
            }
        }

        // determine the next slide
        this.n_nextSlide = (n_slide == null ? this.n_currentSlide + 1 : n_slide) % this.a_items.length;
        if (this.n_nextSlide == this.n_currentSlide) return;

        // schedule transition
        this.o_timerS = setTimeout('A_SLIDES[' + this.n_id + '].f_fade' + (this.n_nextSlide > this.n_currentSlide ? 'In' : 'Out') + '()', (b_now ? 0 : this.a_tpl['slidetime'] * 1e3));
    }

    function tslide_fadeIn(n_opacity) {
        // new transition
        if (n_opacity == null) {
            n_opacity = 0;
        }
        n_opacity += this.n_opacDec;
        // end of transition
        if (n_opacity > 99) {
            this.f_slideOp(this.n_nextSlide, 99);
            this.f_slideOp(this.n_currentSlide, 0);
            this.n_currentSlide = this.n_nextSlide;
            this.n_nextSlide = null;
            return this.f_run();
        }
        // set transparency
        this.f_slideOp(this.n_nextSlide, n_opacity);

        // cycle
        this.o_timerT = setTimeout('A_SLIDES[' + this.n_id + '].f_fadeIn(' + n_opacity + ')', this.n_timeDec);
    }
    function tslide_fadeOut(n_opacity) {
        // new transition
        if (n_opacity == null) {
            n_opacity = 99;
            this.f_slideOp(this.n_nextSlide, 99);
        }
        n_opacity -= this.n_opacDec;
        // end of transition
        if (n_opacity < 0) {
            this.f_slideOp(this.n_currentSlide, 0);
            this.n_currentSlide = this.n_nextSlide;
            this.n_nextSlide = null;
            return this.f_run();
        }
        // set transparency
        this.f_slideOp(this.n_currentSlide, n_opacity);

        // cycle
        this.o_timerT = setTimeout('A_SLIDES[' + this.n_id + '].f_fadeOut(' + n_opacity + ')', this.n_timeDec);
    }

    function tslide_slideOp(n_slide, n_opacity) {
        if (!n_slide) return;
        var e_slide = this.a_imgRefs[n_slide];
        tslide_setOpacity(e_slide, n_opacity);
    }

    function tslide_randomize(a_source, a_slnks) {
        var a_items = [],
        a_links = [];
        while (a_source.length) {
            n_index = Math.ceil(Math.random() * a_source.length) - 1;
            a_items[a_items.length] = a_source[n_index] + "|" + a_slnks[n_index];
            a_source[n_index] = a_source[a_source.length - 1];
            a_slnks[n_index] = a_slnks[a_slnks.length - 1];
            a_source.length = a_source.length - 1;
            a_slnks.length = a_slnks.length - 1;
        }

       
        return a_items;
    }

   

    // cross-browser opacity
    var s_uaApp = navigator.userAgent.toLowerCase();
    if (s_uaApp.indexOf('opera') != -1 || s_uaApp.indexOf('safari') != -1)
        window.tslide_setOpacity = function (e_element, n_opacity) {
            e_element.style.opacity = n_opacity / 100;
        };
    else if (s_uaApp.indexOf('gecko') != -1)
        window.tslide_setOpacity = function (e_element, n_opacity) {
            e_element.style.MozOpacity = n_opacity / 100;
            e_element.style.opacity = n_opacity / 100;
        };
    else if (s_uaApp.indexOf('msie') != -1)
        window.tslide_setOpacity = function (e_element, n_opacity) {
            try { e_element.filters.alpha.opacity = n_opacity; } catch (e) { };
        };
    else
        window.tslide_setOpacity = null;

    // defaults
    var A_TSLIDEDEFS = [
	'steps', 40,
	'css', '',
	'transtime', 0.5,
	'slidetime', 2
];
</script>
</head>
<body>
 <script type="text/javascript">

     // configuration structure
     var A_TPL111 = {
         // randomize the array each time page loads
         'random': true,
         // number of transparency changes during the transition
         //	increase for smoother transition, reduce for less CPU usage
         'steps': 20,
         // transition duration in seconds
         'transtime': 1.5,
         // slide time in seconds
         'slidetime': 5,
         // width of the slide (optional)
         'width': 140,
         // height of the slide (optional)
         'height': 168,
         // alt text for the image (optional)
         'alt': 'alternate',
         // css class assigned to the slide <img /> (optional)
         'css': ''
     };

     // list of images to display
     var A_ITEMS111 = [
		'http://histochemicalsociety.org/Images/HomePage-RotatingGraphic-Award.jpg',
        'http://histochemicalsociety.org/Images/HomePage-RotatingGraphic-JHC.jpg',
        'http://histochemicalsociety.org/Images/HomePage-RotatingGraphic-Directory.jpg',
        'http://histochemicalsociety.org/Images/HomePage-RotatingGraphic-Meeting.jpg'
	];

    var A_LINKS = [
		'http://google.com',
		'http://msn.com',
		'http://yahoo.com',
		'http://bing.com'
		
	];



     // fader initialization	
    var mySlideShow111 = new tFader(A_ITEMS111, A_LINKS, A_TPL111);

</script>
</body>
</html>

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Comment
Question by:guyriso
  • 3
  • 2
8 Comments
 
LVL 15

Expert Comment

by:Insoftservice
Comment Utility
Try out this one.
Check right page of the below link for reference.
http://www.boisoc.com/


<html>
<head>
<title>Love to Marry free website</title>
<script type="text/javascript" src="http://boisoc.com/media/scripts/jquery-1.4.2.js" ></script>
</head>
<script type="text/javascript">

function theRotator() {
	//Set the opacity of all images to 0
	$('div.rotator ul li').css({opacity: 0.0});
	
	//Get the first image and display it (gets set to full opacity)
	$('div.rotator ul li:first').css({opacity: 1.0});
		
	//Call the rotator function to run the slideshow, 6000 = change to next image after 6 seconds
	
	setInterval('rotate()',3000);
	
}

function rotate() {	
	//Get the first image
	var current = ($('div.rotator ul li.show')?  $('div.rotator ul li.show') : $('div.rotator ul li:first'));

    if ( current.length == 0 ) current = $('div.rotator ul li:first');

	//Get next image, when it reaches the end, rotate it back to the first image
	var next = ((current.next().length) ? ((current.next().hasClass('show')) ? $('div.rotator ul li:first') :current.next()) : $('div.rotator ul li:first'));
	


	//Set the fade in effect for the next image, the show class has higher z-index
	next.css({opacity: 0.0})
	.addClass('show')
	.animate({opacity: 1.0}, 1000);

	//Hide the current image
	current.animate({opacity: 0.0}, 1000)
	.removeClass('show');
	
};



$(document).ready(function() {		
	//Load the slideshow
	theRotator();
	$('div.rotator').fadeIn(1000);
    $('div.rotator ul li').fadeIn(1000); // tweek for IE
});
</script>
<style type="text/css">

ul{
	list-style-type:none;
}

/* rotator in-page placement */
    div.rotator {
	position:relative;
	height:250px;
/*	margin-left: 15px;
*/	display: none;
}
/* rotator css */
	div.rotator ul li {
	float:left;
	position:absolute;
	list-style: none;
}
/* rotator image style */	
	div.rotator ul li img {
	border:1px solid #ccc;
	padding: 4px;
	background: #FFF;
}
    div.rotator ul li.show {
	z-index:500
}
</style>


	<div class="rotator">
  <ul>
    <li class="show"><a href="http://treo.biz" target="_blank"><img src="http://boisoc.com/media/commitee/gal1.jpg" width="220" height="229"  alt="pic1" /></a></li>
    <li><a href="http://arts.treo.biz" target="_blank">
	<img src="http://boisoc.com/media/commitee/gal2.jpg" width="220" height="229"   alt="pic2" /></a></li>
    <li><a href="http://boisoc.com/gallery" target="_blank">
	<img src="http://boisoc.com/media/commitee/gal3.jpg" width="220" height="229"   alt="pic3" /></a></li>
    <li><a href="http://boisoc.com/holidayhome" target="_blank">
	<img src="http://boisoc.com/media/commitee/gal4.jpg" width="220" height="229"   alt="pic4" /></a></li>
 <li><a href="http://arts.treo.biz" target="_blank">
        <img src="http://boisoc.com/media/commitee/gal5.jpg" width="220" height="229"   alt="pic4" /></a></li>

  </ul>

</div>
</html>

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LVL 82

Accepted Solution

by:
leakim971 earned 500 total points
Comment Utility
Line 68, you've :
window.location.href =\'' + this.a_lnks[ 0 ]
instead :
window.location.href =\'' + this.a_lnks[ i ]

and replace :
for (var i = 1; i < this.a_items.length; i++) {
by :
for (var i = 0; i < this.a_items.length; i++) {

Test page : http://fiddle.jshell.net/Wycbz/show/
"Source" : http://jsfiddle.net/Wycbz/
0
 

Author Comment

by:guyriso
Comment Utility
@insoftservice, I was trying to stay away from using jquery for this!

@leakim971, Your solution is rendering something similar to what was being rendered with the code I provided.  Everything renders the way you would expect it to, but when clicking on the images, the links are not corresponding to the image that is clicked.
0
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LVL 82

Expert Comment

by:leakim971
Comment Utility
Did you tried my test page?
0
 

Author Comment

by:guyriso
Comment Utility
@leakim971 - yes. Sorry it has taken me so long to respond.  I am not on the distribution list that receives these emails and my co worker forgot to forward them to me.  I will continue to monitor this thread so we can get this resolved so you can receive credit for your time.
0
 

Author Comment

by:guyriso
Comment Utility
I tried the test page but the links do not match with the images being clicked.  Everything renders properly, but when you look at what image is being clicked, they are not matching with the associated links.

Thanks
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