--- a/dwt/internal/image/PNGFileFormat.d	Wed Aug 27 14:10:03 2008 +0200
+++ b/dwt/internal/image/PNGFileFormat.d	Wed Aug 27 14:30:35 2008 +0200
@@ -97,12 +97,12 @@
             break;
         case PngChunk.CHUNK_PLTE:
             if (!headerChunk.usesDirectColor()) {
-                paletteChunk = (PngPlteChunk) chunk;
+                paletteChunk = cast(PngPlteChunk) chunk;
                 imageData.palette = paletteChunk.getPaletteData();                      
             }           
             break;
         case PngChunk.CHUNK_tRNS:
-            PngTrnsChunk trnsChunk = (PngTrnsChunk) chunk;
+            PngTrnsChunk trnsChunk = cast(PngTrnsChunk) chunk;
             if (trnsChunk.getTransparencyType(headerChunk) is 
                 PngTrnsChunk.TRANSPARENCY_TYPE_PIXEL) 
             {
@@ -135,7 +135,7 @@
             } else {
                 // Read in the pixel data for the image. This should
                 // go through all the image's IDAT chunks.  
-                PngIdatChunk dataChunk = (PngIdatChunk) chunk;
+                PngIdatChunk dataChunk = cast(PngIdatChunk) chunk;
                 readPixelData(dataChunk, chunkReader);              
             }
             break;
@@ -380,7 +380,7 @@
     byte[] currentRow = row1;   
     byte[] lastRow = row2;  
     for (int row = startRow; row < height; row += rowInterval) {
-        byte filterType = (byte)inputStream.read();
+        byte filterType = cast(byte)inputStream.read();
         int read = 0;
         while (read !is bytesPerRow) {
             read += inputStream.read(currentRow, read, bytesPerRow - read);
@@ -445,7 +445,7 @@
  */
 void fireInterlacedFrameEvent(int frameCount) {
     if (loader.hasListeners()) {
-        ImageData image = (ImageData) imageData.clone();
+        ImageData image = cast(ImageData) imageData.clone();
         bool finalFrame = frameCount is 6;
         loader.notifyListeners(new ImageLoaderEvent(loader, image, frameCount, finalFrame));
     }
@@ -465,7 +465,7 @@
     byte[] lastRow = row2;
     int height = headerChunk.getHeight();
     for (int row = 0; row < height; row++) {
-        byte filterType = (byte)inputStream.read();
+        byte filterType = cast(byte)inputStream.read();
         int read = 0;
         while (read !is bytesPerRow) {
             read += inputStream.read(currentRow, read, bytesPerRow - read);
@@ -499,7 +499,7 @@
         int sourceIndex = sourceOffset + (2 * i);
         int destinationIndex = destinationOffset + i;
         //int value = (source[sourceIndex] << 8) | source[sourceIndex + 1];
-        //byte compressedValue = (byte)(value * multiplier);
+        //byte compressedValue = cast(byte)(value * multiplier);
         byte compressedValue = source[sourceIndex];
         destination[destinationIndex] = compressedValue;
     }
@@ -515,7 +515,7 @@
  */
 static int compress16BitDepthTo8BitDepth(int value) {
     //double multiplier = (Compatibility.pow2(8) - 1) / (Compatibility.pow2(16) - 1);
-    //byte compressedValue = (byte)(value * multiplier);
+    //byte compressedValue = cast(byte)(value * multiplier);
     return value >> 8;
 }
 /**
@@ -532,14 +532,14 @@
             for (int i = byteOffset; i < row.length; i++) {
                 int current = row[i] & 0xFF;
                 int left = row[i - byteOffset] & 0xFF;
-                row[i] = (byte)((current + left) & 0xFF);
+                row[i] = cast(byte)((current + left) & 0xFF);
             }
             break;
         case PngIhdrChunk.FILTER_UP:
             for (int i = 0; i < row.length; i++) {
                 int current = row[i] & 0xFF;
                 int above = previousRow[i] & 0xFF;              
-                row[i] = (byte)((current + above) & 0xFF);
+                row[i] = cast(byte)((current + above) & 0xFF);
             }
             break;
         case PngIhdrChunk.FILTER_AVERAGE:
@@ -547,7 +547,7 @@
                 int left = (i < byteOffset) ? 0 : row[i - byteOffset] & 0xFF;
                 int above = previousRow[i] & 0xFF;
                 int current = row[i] & 0xFF;
-                row[i] = (byte)((current + ((left + above) / 2)) & 0xFF);
+                row[i] = cast(byte)((current + ((left + above) / 2)) & 0xFF);
             }
             break;
         case PngIhdrChunk.FILTER_PAETH:
@@ -570,7 +570,7 @@
                 }
                 
                 int currentValue = row[i] & 0xFF;
-                row[i] = (byte) ((currentValue + preductor) & 0xFF);
+                row[i] = cast(byte) ((currentValue + preductor) & 0xFF);
             }
             break;
     }