/*** CONFIGURA ***/

var _widthmenu = 150;

var _topoffset = 3;

var _alignerr = 10;

var _menuerr = 60;













var _items = new Array();

var _currentMenu = null;



if( ! document.getElementById ) document.getElementById = function() { return null; }



function _winsize_() {

 var _wsize = null;



 if( parseInt( navigator.appVersion ) > 3 ) {

  if( navigator.appName === "Netscape" ) {

   _wsize = window.innerWidth;

  }



  if( navigator.appName.indexOf( "Microsoft" ) !== -1 ) {

   _wsize = document.body.offsetWidth;

  }

 }



 return _wsize;

}



function _isLeftAlign_() {
 return ( Math.abs( document.getElementById( _items[0] ).offsetLeft - document.getElementById( _items[_items.length - 1] ).offsetLeft ) < _alignerr )? true : false;
}



function _isTopAlign_() {
 return ( Math.abs( document.getElementById( _items[0] ).offsetTop - document.getElementById( _items[_items.length - 1] ).offsetTop ) < _alignerr )? true : false;
}



function _initializeMenu_( _menuId, _actuatorId ) {

 var _menu = document.getElementById( _menuId );

 var _actuator = document.getElementById( _actuatorId );



 if ( ( null === _menu ) || ( null === _actuator ) ) return;



 _actuator.showMenu = function() {

                       _menu.style.width = _widthmenu + "px";

                       _menu.style.left = ( ( _menu.id.indexOf( _items[_items.length - 1] ) !== -1 ) && ( ( this.offsetLeft + _widthmenu + _menuerr ) > _winsize_() ) )? ( ( this.offsetLeft + this.offsetWidth - _widthmenu ) + "px" ) : ( this.offsetLeft + "px" );

                       _menu.style.top = ( _topoffset + this.offsetTop + this.offsetHeight ) + "px";
// _menu.style.left = "50" + "px";
// _menu.style.left = DISTANZA_
//alert ( this.style.left );
// alert ( document.getElementById( "header" ).offsetLeft );
//alert ( this.offsetLeft );

                       _menu.style.visibility = "visible";

                       _menu.style.display = "block";

                       _currentMenu = _menu;

                       return;



                      }



 _actuator.onfocus = function() {

                      if( _isTopAlign_() ) {

                       if ( null !== _currentMenu ) {

                        if( _currentMenu.id === _menu.id ) {

                         _currentMenu.style.visibility = "hidden";

                         _currentMenu.style.display = "none";

                         _currentMenu = null;

                         return;

                        }

                        else {

                         _currentMenu.style.visibility = "hidden";

                         _currentMenu.style.display = "none";

                         _currentMenu = null;

                        }

                       }



                       this.showMenu();

                      }

                      else if( ( ! _isLeftAlign_() ) && ( null !== _currentMenu ) ) {

                       _currentMenu.style.visibility = "hidden";

                       _currentMenu.style.display = "none";

                       _currentMenu = null;

                      }



                      return;

                     }



/* patch 10-SET-08 [Evento modificato per abilitare il menu' su mac e chrome] */
 _actuator.onclick = function() {

                      if( ( navigator.platform.indexOf( "Mac" ) !== -1 ) && ( navigator.userAgent.indexOf( "Apple" ) !== -1 ) ) {
                       this.blur();

                       if( _isTopAlign_() ) {
                        _actuator.onfocus();
                        return false;
                       }
                       else
                        return;
                      }

                      else if( navigator.userAgent.indexOf( "Chrome" ) !== -1 ) {
                       _actuator.onfocus();
                       return _isTopAlign_() ? false : true;
                      }

                      else {
                       this.blur();
                       return _isTopAlign_() ? false : true;
                      }

                     }
 return;

}
/* fine patch */



function _applystyle_( _obj, _str ) {

 if( document.all && ( ! window.opera ) )

  _obj.style.setAttribute( "cssText", _str );

 else

  _obj.setAttribute( "style", _str );



 return;

}



function _menuResize_() {

 var _busyspace = 0;



 for( var _index in _items ) {

  _applystyle_( document.getElementById( _items[_index] ), "padding: 0px;" );

  _busyspace += document.getElementById( _items[_index] ).offsetWidth;

 }

 var _padd = Math.max( 0, Math.floor( ( ( document.getElementById( "mainMenu" ).offsetWidth - _busyspace - _menuerr ) / _items.length ) / 2 ) );

 for( var _index in _items )

  _applystyle_( document.getElementById( _items[_index] ), "padding: 2px " + _padd + "px;" );



 return;

}