Just brute force this shit

comcastify.js

@@ -6,12 +6,27 @@ var comcastifyjs = (function () {
 
         // calculate new height
         var newTopClip = slowloadDiv.slothifyData.imageTopClip + args.loadIncrement;
+        var img = slowloadDiv.previousSibling;
+        slowloadDiv.style.width = img.offsetWidth + 'px';
+        slowloadDiv.style.height = img.offsetHeight + 'px';
+        slowloadDiv.style.top = img.offsetTop + 'px';
+        slowloadDiv.style.left = img.offsetLeft + 'px';
 
         // update slowload div
         slowloadDiv.style.clip = 'rect(' + newTopClip + 'px auto auto auto)';
 
+
+        if (!img.complete) {
+          setTimeout(slowloadModiferCallback(slowloadDiv, args), args.loadSpeed);
+        }
+        if (typeof img.naturalHeight !== "undefined" && img.naturalWidth === 0) {
+          setTimeout(slowloadModiferCallback(slowloadDiv, args), args.loadSpeed);
+        }
+
         // check stopping conditions
-        if (newTopClip < slowloadDiv.slothifyData.maxImageHeight) {
+        var maxImageHeight = img.height * args.loadMaxPercent;
+
+        if (!maxImageHeight || maxImageHeight === 0 || newTopClip < maxImageHeight) {
           // create new update timeout
           slowloadDiv.slothifyData.imageTopClip = newTopClip;
           setTimeout(slowloadModiferCallback(slowloadDiv, args), args.loadSpeed);
@@ -32,24 +47,21 @@ var comcastifyjs = (function () {
   var slowImages = function (args) {
     return function () {
       var params = {
+        elements: args.elements || document.getElementsByTagName('img'),
         boxColor: args.boxColor || '#000000',       // color of box overlay
         loadMaxPercent: args.loadMaxPercent || 0.0, // max percentage to load images
         loadSpeed: args.loadSpeed || 500,           // how often in ms to pass
         loadIncrement: args.loadIncrement || 1      // pixels to load per pass
       };
 
-      // grab all the images
-      var imgs = document.getElementsByTagName('img');
-
       // make 'em load slow
-      for(var i = 0; i < imgs.length; i++) {
+      for(var i = 0; i < params.elements.length; i++) {
         // get some things we need
-        var img = imgs[i],
+        var img = params.elements[i],
             parent = img.parentNode,
             slowload = document.createElement('DIV');
 
         // set up initial state of box
-        slowload.className = 'sloth-box';
         slowload.style.backgroundColor = params.boxColor;
         slowload.style.width = img.offsetWidth + 'px';
         slowload.style.height = img.offsetHeight + 'px';