diff --git a/src/mibew/styles/silver/images/default-logo.gif b/src/mibew/styles/silver/images/default-logo.gif
deleted file mode 100644
index d64721c2..00000000
Binary files a/src/mibew/styles/silver/images/default-logo.gif and /dev/null differ
diff --git a/src/mibew/styles/silver/images/default-logo.png b/src/mibew/styles/silver/images/default-logo.png
new file mode 100644
index 00000000..53ee48fa
Binary files /dev/null and b/src/mibew/styles/silver/images/default-logo.png differ
diff --git a/src/mibew/styles/silver/templates/chat.tpl b/src/mibew/styles/silver/templates/chat.tpl
index 2bb2bbaa..5bce4b50 100644
--- a/src/mibew/styles/silver/templates/chat.tpl
+++ b/src/mibew/styles/silver/templates/chat.tpl
@@ -69,10 +69,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img onload="setTrueHeight();" src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img onload="setTrueHeight();" src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img onload="setTrueHeight();" src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img onload="setTrueHeight();" src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;
diff --git a/src/mibew/styles/silver/templates/error.tpl b/src/mibew/styles/silver/templates/error.tpl
index 9d5c2921..c1589ea3 100644
--- a/src/mibew/styles/silver/templates/error.tpl
+++ b/src/mibew/styles/silver/templates/error.tpl
@@ -19,10 +19,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;
diff --git a/src/mibew/styles/silver/templates/leavemessage.tpl b/src/mibew/styles/silver/templates/leavemessage.tpl
index ea240b57..b01110be 100644
--- a/src/mibew/styles/silver/templates/leavemessage.tpl
+++ b/src/mibew/styles/silver/templates/leavemessage.tpl
@@ -26,10 +26,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;
diff --git a/src/mibew/styles/silver/templates/leavemessagesent.tpl b/src/mibew/styles/silver/templates/leavemessagesent.tpl
index cb2c6ec9..ca772954 100644
--- a/src/mibew/styles/silver/templates/leavemessagesent.tpl
+++ b/src/mibew/styles/silver/templates/leavemessagesent.tpl
@@ -19,10 +19,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;
diff --git a/src/mibew/styles/silver/templates/mail.tpl b/src/mibew/styles/silver/templates/mail.tpl
index 8100fd19..9e65e138 100644
--- a/src/mibew/styles/silver/templates/mail.tpl
+++ b/src/mibew/styles/silver/templates/mail.tpl
@@ -23,10 +23,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;<br />&nbsp;
diff --git a/src/mibew/styles/silver/templates/mailsent.tpl b/src/mibew/styles/silver/templates/mailsent.tpl
index 3897e259..34144fa4 100644
--- a/src/mibew/styles/silver/templates/mailsent.tpl
+++ b/src/mibew/styles/silver/templates/mailsent.tpl
@@ -19,10 +19,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;
diff --git a/src/mibew/styles/silver/templates/nochat.tpl b/src/mibew/styles/silver/templates/nochat.tpl
index 90670493..b47ed0f6 100644
--- a/src/mibew/styles/silver/templates/nochat.tpl
+++ b/src/mibew/styles/silver/templates/nochat.tpl
@@ -19,10 +19,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;
diff --git a/src/mibew/styles/silver/templates/redirect.tpl b/src/mibew/styles/silver/templates/redirect.tpl
index 08dc1fc6..9b918af9 100644
--- a/src/mibew/styles/silver/templates/redirect.tpl
+++ b/src/mibew/styles/silver/templates/redirect.tpl
@@ -19,10 +19,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;<br />&nbsp;
diff --git a/src/mibew/styles/silver/templates/redirected.tpl b/src/mibew/styles/silver/templates/redirected.tpl
index 589b3885..590a86c0 100644
--- a/src/mibew/styles/silver/templates/redirected.tpl
+++ b/src/mibew/styles/silver/templates/redirected.tpl
@@ -19,10 +19,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;
diff --git a/src/mibew/styles/silver/templates/survey.tpl b/src/mibew/styles/silver/templates/survey.tpl
index 90aa83cb..76268800 100644
--- a/src/mibew/styles/silver/templates/survey.tpl
+++ b/src/mibew/styles/silver/templates/survey.tpl
@@ -19,10 +19,10 @@
 			${else:ct.company.chatLogoURL}
 				${if:mibewHost}
 					<a onclick="window.open('${page:mibewHost}');return false;" href="${page:mibewHost}">
-						<img src="${tplroot}/images/default-logo.gif" alt=""/>
+						<img src="${tplroot}/images/default-logo.png" alt=""/>
 					</a>
 				${else:mibewHost}
-					<img src="${tplroot}/images/default-logo.gif" alt=""/>
+					<img src="${tplroot}/images/default-logo.png" alt=""/>
 				${endif:mibewHost}
 			${endif:ct.company.chatLogoURL}
 			&nbsp;