[#3917] Automatically scroll down to the bottom of the page

sflphone-client-gnome/webkit/im/im.html

@@ -13,5 +13,6 @@
 			<div id="messages">
 			</div>
 		</div>
+		<a id="bottom"></a>
 	</body>
 </html>

sflphone-client-gnome/webkit/im/im.js

@@ -15,7 +15,7 @@ function linkify(text){
 }
 
 
-function add_message (message, peer_name, peer_number, peer_info)
+function add_message (message, peer_name, peer_number, class_additionnal)
 {
 	var display_name = 'Unknown';
 	if (peer_name != '') {
@@ -23,7 +23,8 @@ function add_message (message, peer_name, peer_number, peer_info)
 	}
 
 	var msgBody = document.getElementById ('messages');
-	msgBody.innerHTML = msgBody.innerHTML + '<div class="message">' +  '<span class="author">' + display_name + ': </span>' + '<p class="text">' + linkify (message) + '</p></div>' ;
+	msgBody.innerHTML = msgBody.innerHTML + '<div class="message ' + class_additionnal + '">' +  '<span class="author">' + display_name + ': </span>' + '<p class="text">' + linkify (message) + '</p></div>' ;
+	document.getElementById("bottom").scrollIntoView(true);
 }
 
 function add_call_info_header (peer_name, peer_number, peer_info)