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Thread: Proportional scale images on window resize?

  1. #1
    Join Date
    Feb 2009

    Proportional scale images on window resize?

    Proportional scale images on window resize?

    Hi all

    I'm trying to re-create a page like this:


    this a demo of an old flash site I did years ago.

    I want to recreate the window resize function with html/jQuery.

    When the window is resized the thumbnails stay the same size at the
    bottom of the image and the image scales proportionally.

    I've got it sort of working here:


    I'm using jQuery cycle to create the slideshow and thumbnails.

    When the page loads the large image is the correct size and scales when the window is resized.

    When a thumbnail is clicked the images doesn't load at the correct size. When the window is resized it
    goes to the correct height but the width doesn't change.

    How can I load the image at the correct height and width when a thumbnail is clicked. And keep it proportional
    when the window is resized.

    Hope someone can help. Any help is greatly appreciated.

    <!DOCTYPE html>
      <title>Title of the document</title>
      <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>
      <script type="text/javascript" src="http://cloud.github.com/downloads/malsup/cycle/jquery.cycle.all.2.74.js"></script>
      <link rel="stylesheet" type="text/css" href="http://yui.yahooapis.com/3.4.1/build/cssreset/cssreset-min.css">
      <style type="text/css">
        #footer {
          height: 100px; 
        div#thumbWrap {
          position: relative;
          height: 100px;
          width: 400px;
          overflow: auto;
          margin:0 0 0 50px;
        ul#thumbs {
          display: block;
          height: 110px;
          width: 1500px;
          padding: 15px 0 0 15px;
          margin: 0;
          background: url('navigation.png');
          list-style: none;
        ul#thumbs li {
          display: block;
          float: left;
          padding: 0 4px;
        ul#thumbs a {
          display: block;
          text-decoration: none;
        ul#thumbs img {
          border: 3px #fff solid;
        ul#thumbs a:hover img {
          opacity: 0.5;
      <div id="content">
        <img src="images/01.jpg" alt="" />
        <img src="images/02.jpg" alt="" />
        <img src="images/03.jpg" alt="" />
        <img src="images/04.jpg" alt="" />
        <img src="images/05.jpg" alt="" />
      </div><!-- #content -->
      <div id="footer">
          <div id="thumbWrap">
            <ul id="thumbs">
      <script type="text/javascript">
        $(window).load(function() { 
              fx:     'fade', 
              speed:  'fast', 
              timeout: 0, 
              pager:  '#thumbs', 
              pagerAnchorBuilder: function(idx, slide) { 
                  return '<li><a href="#"><img src="' + slide.src + '" width="auto" height="50" /></a></li>'; 
          var div = $('div#thumbWrap'), ul = $('ul#thumbs'), ulPadding = 15;
          var divWidth = div.width();
          var lastLi = ul.find('li:last-child');
            var ulWidth = lastLi[0].offsetLeft + lastLi.outerWidth() + ulPadding;        
            var left = (e.pageX - div.offset().left) * (ulWidth-divWidth) / divWidth;         
          $content = $('#content');
          var footerHeight = 0,
          footerTop = 20,
          $footer = $("#footer");
            function positionFooter() {
              footerHeight = $footer.height();
              footerTop = ($(window).scrollTop()+$(window).height()-footerHeight)+"px";
              var imgHeight = $('#content img').height();
              var imgWidth = $('#content img').width();
              var ratio = imgWidth/imgHeight;
              $('#content img').height($content.height());
              //$('#content img').width(ratio*imgWidth);
              if ( ($(document.body).height()+footerHeight) < $(window).height()) {
              } else {
    Last edited by ttmt; 04-24-2012 at 11:26 AM.

  2. #2
    Join Date
    Dec 2002
    St. Louis, MO, USA
    Look up bgstretcher.js. You can use it to resize a background image, or set an image as the background of a div and have it resize with the div.
    o . Q
    ___ "You live and you learn; or you don't live long." - Lazarus Long


  3. #3
    Join Date
    Feb 2009
    Thanks for that WolfShade, I'll look into it.

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