Installation
------------
- Copy the yui module into Drupal modules directory.
- Login as an administrator. Enable the module in the "Administer" -> "Site building" -> "modules"
- Edit the settings under "Administer" -> "Site configuration" -> "YUI Menu Settings" to select the root menu.
- Modify your page.tpl.php described in "How to modify page.tpl.php"  


Important Notes:
----------------
The theme should appropriate to use this a drop down menu. Some css based themes may have display problems.
For instance garland is an exception because of the phptemplate.
To active the menu you have to add a short text in to your active page.tpl.php.

How to add menu
---------------
To add the menu there is two different approach.
1- Block approach
   Use the site buildings->blocks->YUI Menu. 
   This option may have design problem on drowdown. So istead of that you can use the second option.
   Do not forget to specify the Site configuration->YUI Menu Settings->Menu Display type to have the correct direction.
2- Modify paga.tpl.php approach
   Modify the page.tpl.php file for accurate place. 

Using both approaches may produse problems. 

How to modify page.tpl.php
--------------------------
1- Open your page.tpl.php file under theme/yourtheme directory.
2- Add the following lines to proper place as follows in examples
   <?php if (module_hook('yuimenu','menu') && ("tns" == variable_get('yuimenu_type','tns') || "tnm"==variable_get('yuimenu_type','tns')) ){?>
	<?php print html_menu(variable_get('yuimenu_root','1') ); ?>
   <?php }?>
    
	Example in foliage page.tpl.php
	-------------------------------
	  <tr id="headerbottom">
	    <td colspan="2"><div><?php print $header ?>&nbsp;</div></td>
	  </tr>
	  
	  <!-- YUI Menu Start -->
	  <?php if (module_hook('yuimenu','menu') && ("tns" == variable_get('yuimenu_type','tns') || "tnm"==variable_get('yuimenu_type','tns')) ){?>
		  <tr id="headerbottom">
		    <td colspan="2">
		    	<div style="position: relative; z-index: 100;">
			      	<?php print html_menu(variable_get('yuimenu_root','1') ); ?>
		    	</div>
		    </td>
		  </tr>
	  <?php }?>
	  <!-- YUI Menu End-->
	  
	  </table>    
	
	Example in bluebreeze page.tpl.php
	-------------------------------
	    <?php if ($header): ?>
	        <div id="header-region">
	          <?php print $header ?>
	        </div>
	      <?php endif; ?>
	      
	    </div>
	    
	    <!-- YUI Menu Start -->
	    <?php if (module_hook('yuimenu','menu') && ("tns" == variable_get('yuimenu_type','tns') || "tnm"==variable_get('yuimenu_type','tns')) ){?>
	    	<div style="position: relative; z-index: 100;">
		      	<?php print html_menu(variable_get('yuimenu_root','1') ); ?>
	    	</div>
		<?php }?>
	    <!-- YUI Menu End-->
	    
	    <div id="container" class="<?php if ($sidebar_left) { print "withleft"; } if ($sidebar_right) { print " withright"; }?> clear-block">
	      <div id="main-wrapper">
	      <div id="main" class="clear-block">