First test

kankys-theme/sidebar.php

@@ -0,0 +1,17 @@
+<?php if ( ! is_active_sidebar( 'main-sidebar' ) ) :   ?>
+ 
+ <div class="widget widget_search"><!--BEGIN #searchform-->
+     <form method="get" id="searchform" action="/">
+            <fieldset>
+             <input type="text" name="s" id="s" value="search" onfocus="if(this.value=='search')this.value='';" onblur="if(this.value=='')this.value='search';" />
+               <input type="submit" name="submit" value="" id="s-submit">
+            </fieldset>
+     <!--END #searchform-->
+     </form>
+   </div> 
+
+<?php else:                                        
+
+ dynamic_sidebar( 'main-sidebar' ); 
+
+endif;