diff --git a/htdocs/theme/eldy/eldy.css b/htdocs/theme/eldy/eldy.css
index 53d671f8c00..1c8d3254448 100644
--- a/htdocs/theme/eldy/eldy.css
+++ b/htdocs/theme/eldy/eldy.css
@@ -45,7 +45,7 @@ textarea  { font: helvetica, verdana, arial, sans-serif; }
     font: 12px helvetica, verdana, arial, sans-serif;
 	font-size: 100%;
 	border: 1px solid #ccd7e0;
-	background-image : url(/theme/eldy/img/button_bg.gif);
+	background-image : url(/theme/eldy/img/button_bg.png);
 	background-position : bottom;
 }
 
@@ -262,7 +262,7 @@ div.help
 	font-size: 100%;
 	font-weight: normal;
 	border: 1px solid #ccd7e0;
-	background-image : url(img/button_bg.gif);
+	background-image : url(img/button_bg.png);
 	background-position : bottom;
 }
 
diff --git a/htdocs/theme/eldy/img/button_bg.gif b/htdocs/theme/eldy/img/button_bg.gif
deleted file mode 100644
index 5e8501d4ef4..00000000000
Binary files a/htdocs/theme/eldy/img/button_bg.gif and /dev/null differ
diff --git a/htdocs/theme/eldy/img/button_bg.png b/htdocs/theme/eldy/img/button_bg.png
new file mode 100644
index 00000000000..b640ea67458
Binary files /dev/null and b/htdocs/theme/eldy/img/button_bg.png differ
diff --git a/htdocs/theme/eldy/img/object_stock.gif b/htdocs/theme/eldy/img/object_stock.gif
deleted file mode 100644
index 5cde2618bc6..00000000000
Binary files a/htdocs/theme/eldy/img/object_stock.gif and /dev/null differ
diff --git a/htdocs/theme/eldy/img/object_stock.png b/htdocs/theme/eldy/img/object_stock.png
new file mode 100644
index 00000000000..23db4a651b8
Binary files /dev/null and b/htdocs/theme/eldy/img/object_stock.png differ
diff --git a/htdocs/theme/freelug/img/button_bg.png b/htdocs/theme/freelug/img/button_bg.png
new file mode 100644
index 00000000000..b640ea67458
Binary files /dev/null and b/htdocs/theme/freelug/img/button_bg.png differ
diff --git a/htdocs/theme/yellow/img/button_bg.gif b/htdocs/theme/yellow/img/button_bg.gif
deleted file mode 100644
index 5e8501d4ef4..00000000000
Binary files a/htdocs/theme/yellow/img/button_bg.gif and /dev/null differ
diff --git a/htdocs/theme/yellow/img/button_bg.png b/htdocs/theme/yellow/img/button_bg.png
new file mode 100644
index 00000000000..b640ea67458
Binary files /dev/null and b/htdocs/theme/yellow/img/button_bg.png differ
diff --git a/htdocs/theme/yellow/yellow.css b/htdocs/theme/yellow/yellow.css
index a202ef13284..2092b58079a 100644
--- a/htdocs/theme/yellow/yellow.css
+++ b/htdocs/theme/yellow/yellow.css
@@ -46,7 +46,7 @@ textarea  { font: helvetica, verdana, arial, sans-serif; }
 	font-family: arial,verdana,helvetica, sans-serif;
 	font-size: 100%;
 	border: 1px solid #ccd7e0;
-	background-image : url(/theme/yellow/img/button_bg.gif);
+	background-image : url(/theme/yellow/img/button_bg.png);
 	background-position : bottom;
 }
 
@@ -264,7 +264,7 @@ div.help
 	font-size: 100%;
 	font-weight: normal;
 	border: 1px solid #ccd7e0;
-	background-image : url(img/button_bg.gif);
+	background-image : url(img/button_bg.png);
 	background-position : bottom;
 }