diff --git a/images/resize-handle.gif b/images/resize-handle.gif
new file mode 100644
index 0000000..6d45d74
Binary files /dev/null and b/images/resize-handle.gif differ
diff --git a/images/resize-handle.png b/images/resize-handle.png
deleted file mode 100644
index a778970..0000000
Binary files a/images/resize-handle.png and /dev/null differ
diff --git a/thickbox.css b/thickbox.css
index 9147467..9dc13df 100644
--- a/thickbox.css
+++ b/thickbox.css
@@ -228,6 +228,6 @@
 #TB_Resize div#TB_ResizeS { cursor: s-resize; margin-bottom: -3px; bottom: 0; left: 0; width: 100%; }
 #TB_Resize div#TB_ResizeNE { cursor: ne-resize; margin: -3px -3px 0 0; top: 0; right: 0; }
 #TB_Resize div#TB_ResizeNW { cursor: nw-resize; margin: -3px 0 0 -3px; top: 0; left: 0; }
-#TB_Resize div#TB_ResizeSE { cursor: se-resize; margin: 0 -3px -3px 0; bottom: 0; right: 0; width: 15px; height: 15px; background: url(images/resize-handle.png) no-repeat; }
+#TB_Resize div#TB_ResizeSE { cursor: se-resize; margin: 0 -3px -3px 0; bottom: 0; right: 0; width: 15px; height: 15px; background: url(images/resize-handle.gif) no-repeat; }
 #TB_Resize div#TB_ResizeSW { cursor: sw-resize; margin: 0 0 -3px -3px; bottom: 0; left: 0; }
 #TB_Resize div#TB_ResizeNE, #TB_Resize div#TB_ResizeNW, #TB_Resize div#TB_ResizeSW { width: 8px; height: 8px; }
diff --git a/thickbox.min.css b/thickbox.min.css
index 63e2189..5717b0a 100644
--- a/thickbox.min.css
+++ b/thickbox.min.css
@@ -55,6 +55,6 @@
 #TB_Resize div#TB_ResizeS{cursor:s-resize;margin-bottom:-3px;bottom:0;left:0;width:100%;}
 #TB_Resize div#TB_ResizeNE{cursor:ne-resize;margin:-3px -3px 0 0;top:0;right:0;}
 #TB_Resize div#TB_ResizeNW{cursor:nw-resize;margin:-3px 0 0 -3px;top:0;left:0;}
-#TB_Resize div#TB_ResizeSE{cursor:se-resize;margin:0 -3px -3px 0;bottom:0;right:0;width:15px;height:15px;background:url(images/resize-handle.png) no-repeat;}
+#TB_Resize div#TB_ResizeSE{cursor:se-resize;margin:0 -3px -3px 0;bottom:0;right:0;width:15px;height:15px;background:url(images/resize-handle.gif) no-repeat;}
 #TB_Resize div#TB_ResizeSW{cursor:sw-resize;margin:0 0 -3px -3px;bottom:0;left:0;}
 #TB_Resize div#TB_ResizeNE, #TB_Resize div#TB_ResizeNW, #TB_Resize div#TB_ResizeSW{width:8px;height:8px;}
\ No newline at end of file