Perchance a preloader?

Here's a solution based on MPaler's Preloader (http://drupal.org/node/503400) provided by the dude himself.
Caveat: unfortunately applying this solution will change the horizontal scrolling to vertical, but I thought I might as well post this and do a follow-up once I manage to get it sorted.

1. Paste the following into the head of page.tpl.php. Make sure that it sits before the closing tag and after the bit that loads all the other javascripts:
   

   <script type="text/javascript">
   <!--//--><![CDATA[//><!--
   var path_to_slider = '/sites/all/modules/slider';
   //--><!]]>
   </script>
     <script type="text/javascript"> </script>
     <script type="text/javascript"> 
   <!--//--><![CDATA[//><!--
   
   $(document).ready(function() {
     $(".scrollContainer").hide();
     vCycleImages = setInterval(function() {
        var bImgLoaded = true;
        var images = $(".scrollContainer img.imagefield");
   
        for (var i = 0; i < images.length; i++) {
           var img = images[i];
           if (img.complete == false)
              bImgLoaded = false;
        }
   
        if (bImgLoaded) {
           $(".scrollContainer").show("normal");
           clearInterval(vCycleImages);
        }
     }, 1000);
   });
   
   //--><!]]>
   </script>
   
   

2. Create a preloader gif (you can go to http://www.ajaxload.info/), save it in your theme's images directory and set it as a background for div class="scroll" in your theme's CSS stylesheet:
   .scroll {background:url(images/ajax-loader.gif) no-repeat center;}
3. Still on the CSS, set the display for div class="scrollContainer" to hidden:
   .scrollContainer { display: none; }

Clear your caches and serve.