assets/js/jquery.cloudinary.js in cloudinary-1.0.26 vs assets/js/jquery.cloudinary.js in cloudinary-1.0.27

@@ -24,15 +24,16 @@
     if (size) {
       var split_size = size.split("x");
       options['width'] = width = split_size[0];
       options['height'] = height = split_size[1];  
     }       
-    if (width && parseFloat(width) < 1) delete options['width'];
-    if (height && parseFloat(height) < 1) delete options['height'];
+    var has_layer = options.overlay || options.underlay;
+    if (width && (has_layer || parseFloat(width) < 1)) delete options['width'];
+    if (height && (has_layer || parseFloat(height) < 1)) delete options['height'];
      
     var crop = option_consume(options, 'crop'); 
-    if (!crop) width = height = undefined;
+    if (!crop && !has_layer) width = height = undefined;
 
     var background = option_consume(options, 'background');
     background = background && background.replace(/^#/, 'rgb:');
 
     var base_transformations = build_array(option_consume(options, 'transformation', []));
@@ -56,9 +57,10 @@
       gravity: 'g',
       quality: 'q',
       prefix: 'p',
       default_image: 'd',
       angle: 'a',
+      underlay: 'u',
       overlay: 'l',
       fetch_format: 'f'
     };
     for (var param in simple_params) {
       params.push([simple_params[param], option_consume(options, param)]);