diff --git a/sd/res/webview/common.pl b/sd/res/webview/common.pl
new file mode 100644
index 000000000000..fc4a4866a6d7
--- /dev/null
+++ b/sd/res/webview/common.pl
@@ -0,0 +1,48 @@
+package common;
+
+$REFRESH_TIME = 5;
+
+sub File_read
+{
+    $sFilename = @_[ 0 ];
+
+    @aFileContentList = "";
+    open( F_CURRPIC, "<" . $sFilename ) || "Could not open file " . $sFilename . " !<BR>\n";
+    while( <F_CURRPIC> )
+    {
+        push( @aFileContentList, $_ );
+    }
+    close( F_CURRPIC );
+
+    return @aFileContentList;
+}   ##File_read
+
+
+sub HTTP_getRequest
+{
+    # post- or get- method ?
+    if( $ENV{ 'REQUEST_METHOD' } eq 'GET' )
+    {
+        # get parameters from querystring (get)
+        $sRequest = $ENV{ 'QUERY_STRING' }
+    }
+    else
+    {
+        # get parameters from stdin (post)
+        read( STDIN, $sRequest, $ENV{ 'CONTENT_LENGTH' } );
+    }
+    # process parameters
+    @aRequestList = split( /&/, $sRequest );
+    foreach $Feld ( @aRequestList )
+    {
+        ( $name, $sValue ) = split( /=/, $Feld );
+        $sValue =~ tr/+/ /;
+        $sValue =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
+        $sValue =~ s/<!--(.|\n)*-->//g;
+        $aRequestMap{ $name } = $sValue;
+    }
+
+    return %aRequestMap;
+}   ##HTTP_getRequest
+
+1;
\ No newline at end of file