pandorafms/pandora_console/include/functions_menu.php

<?php

// Pandora FMS - http://pandorafms.com
// ==================================================
// Copyright (c) 2005-2011 Artica Soluciones Tecnologicas
// Please see http://pandorafms.org for full contribution list

// This program is free software; you can redistribute it and/or
// modify it under the terms of the  GNU Lesser General Public License
// as published by the Free Software Foundation; version 2

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

/**
 * @package Include
 * @subpackage Menu
 */

/**
 * Prints a complete menu structure.
 *
 * @param array Menu structure to print.
 */
function menu_print_menu (&$menu) {
	global $config;
	static $idcounter = 0;
	
	echo '<div class="menu">';
	
	$sec = (string) get_parameter ('sec');
	$sec2 = (string) get_parameter ('sec2');
	$menu_selected = false;
	
	$allsec2 = explode('sec2=', $_SERVER['REQUEST_URI']);
	if (isset($allsec2[1])) {
		$allsec2 = $allsec2[1];
	}
	else {
		$allsec2 = $sec2;
	}
	
	//Open list of menu
	echo '<ul' .
		(isset ($menu['class']) ?
			' class="'.$menu['class'].'"' :
			'') .
		'>';
	
	// Use $config because a global var is required because normal
	// and godmode menu are painted separately
	if (!isset($config['count_main_menu'])) $config['count_main_menu'] = 0;
	foreach ($menu as $mainsec => $main) {
		$extensionInMenuParameter = (string) get_parameter ('extension_in_menu','');
		
		$showSubsection = true;
		if ($extensionInMenuParameter != '') {
			if ($extensionInMenuParameter == $mainsec)
				$showSubsection = true;
			else
				$showSubsection = false;
		}
		
		if ($mainsec == 'class')
			continue;
		
		//~ if (enterprise_hook ('enterprise_acl', array ($config['id_user'], $mainsec)) == false)
			//~ continue;
		
		if (! isset ($main['id'])) {
			$id = 'menu_'.++$idcounter;
		}
		else {
			$id = $main['id'];
		}
		
		$submenu = false;
		$classes = array ('menu_icon');
		if (isset ($main["sub"])) {
			$classes[] = '';
			$submenu = true;
		}
		if (!isset ($main["refr"]))
			$main["refr"] = 0;
		
		if (($sec == $mainsec) && ($showSubsection)) {
			$classes[] = '';
		}
		else {
			$classes[] = '';
			if ($extensionInMenuParameter == $mainsec)
				$classes[] = '';
		}
		
		$output = '';
		
		if (! $submenu) {
			$main["sub"] = array (); //Empty array won't go through foreach
		}
		
		$submenu_output = '';
		
		$count_sub = 0;
		$count_sub_access = 0;
		$first_sub_sec2 = '';
		
		foreach ($main["sub"] as $subsec2 => $sub) {
			$count_sub++;
			
			//Init some variables
			$visible = false;
			$selected = false;
			
			$subsec2 = io_safe_output($subsec2);
			// Choose valid suboptions (sec2)
			$check_2 = true;
			if (isset($sub['sub2']))
				$check_2 = false;
			if (enterprise_hook ('enterprise_acl', array ($config['id_user'], $mainsec, $subsec2, $check_2)) == false) {
				continue;
			}
			
			// We store the first subsection to use it if the main section has not access
			if ($count_sub_access == 0) {
				$first_sub_sec2 = $subsec2;
			}
			
			$count_sub_access++;
			
			$class = '';
			
			$selected_submenu2 = false;
			
			//Look for submenus in level2!
			if (isset($sub['sub2'])) {
				$class .= 'has_submenu ';
				
				//This hacks avoid empty delimiter error when sec2 is not provided.
				if (!$sec2) {
					$sec2 = " ";
				}
				
				//Check if some submenu was selected to mark this (the parent) as selected
				foreach (array_keys($sub['sub2']) as $key) {
					
					if (strpos($key, $sec2) !== false) {
						$selected_submenu2 = true;
						break;
					}
				}
			}
			
			
			//Create godmode option if submenu has godmode on
			if (isset($sub['subsecs'])) {
				
				//Sometimes you need to add all paths because in the 
				//same dir are code from visual console and reports
				//for example
				if (is_array($sub['subsecs'])) {
				
					//Compare each string
					foreach ($sub['subsecs'] as $god_path) {
						
						if (strpos($sec2, $god_path) !== false) {
							$selected_submenu2=true;
							break;
						}
					} 
				}
				else {
					//If there is only a string just compare
					if (strpos($sec2, $sub['subsecs']) !== false) {
						$selected_submenu2=true;
					}
				}
			}
			
			
			
			//Set class
			if (($sec2 == $subsec2 || $allsec2 == $subsec2 ||
				$selected_submenu2) && isset ($sub[$subsec2]["options"])
				&& (
					get_parameter_get ($sub[$subsec2]["options"]["name"]) == $sub[$subsec2]["options"]["value"])
				) {
				//If the subclass is selected and there are options and that options value is true
				$class .= 'submenu_selected selected';
				$menu_selected = true;
				$selected = true;
				$visible = true;
			}
			elseif (($sec2 == $subsec2 || $allsec2 == $subsec2|| $selected_submenu2) && !isset ($sub[$subsec2]["options"])) {
				$class .= 'submenu_selected selected';
				$selected = true;
				$menu_selected = true;
				$hasExtensions = (array_key_exists('hasExtensions',$main)) ? $main['hasExtensions'] : false;
				if (($extensionInMenuParameter != '') && ($hasExtensions))
					$visible = true;
				else
					$visible = false;
			}
			elseif (isset($sub['pages']) && (array_search($sec2, $sub['pages']) !== false)) {
				$class .= 'submenu_selected selected';
				$menu_selected = true;
				$selected = true;
				$visible = true;
			}
			else {
				//Else it's not selected
				$class .= 'submenu_not_selected';
			}
			
			if (! isset ($sub["refr"])) {
				$sub["refr"] = 0;
			}
			
			// Define submenu class to draw tree image
			if($count_sub >= count($main['sub'])) {
				$sub_tree_class = 'submenu_text submenu_text_last';
			}
			else {
				$sub_tree_class = 'submenu_text submenu_text_middle';
			}
			
			if (isset ($sub["type"]) && $sub["type"] == "direct") {
				//This is an external link
				$submenu_output .= '<li title="'.$sub["id"].'" id="'. str_replace(' ','_',$sub["id"]) . '" class="'.$class.'">';
				
				if (isset ($sub["subtype"]) && $sub["subtype"] == "nolink") {
					$submenu_output .= '<div class=" SubNoLink ' . $sub_tree_class . '">'.$sub["text"].'</div>';
				}
				else
					if (isset ($sub["subtype"]) && $sub["subtype"] == "new_blank")
						$submenu_output .= '<a href="'.$subsec2.'" target="_blank"><div class="' . $sub_tree_class . '">'.$sub["text"].'</div></a>';
					else
						$submenu_output .= '<a href="'.$subsec2.'"><div class="' . $sub_tree_class . '">'.$sub["text"].'</div></a>';
			}
			else {
				//This is an internal link
				if (isset ($sub[$subsec2]["options"])) {
					$link_add = "&amp;".$sub[$subsec2]["options"]["name"]."=".$sub[$subsec2]["options"]["value"];
				}
				else {
					$link_add = "";
				}
				
				$submenu_output .= '<li id="'. str_replace(' ','_',$sub["id"]) . '" '.($class ? ' class="'.$class.'"' : '').'>';
				
				//Ini Add icon extension
				$secExtension = null;
				if (array_key_exists('extension',$sub))
					$secExtensionBool = $sub["extension"];
				else
					$secExtensionBool = false;
				
				// DISABLE SUBMENU IMAGES
				$secExtensionBool = false;
				
				if ($secExtensionBool) {
					//$imageIconDefault = 'images/extensions.png';
					if (strlen($sub["icon"]) > 0) {
						$icon_enterprise = false;
						if (isset($sub['enterprise'])) {
							$icon_enterprise = (bool)$sub['enterprise'];
						}
						
						if ($icon_enterprise) {
							$imageIcon ='enterprise/extensions/'.$sub["icon"];
						}
						else {
							$imageIcon ='extensions/'.$sub["icon"];
						}
						
						if (!file_exists(realpath($imageIcon)))
							$imageIcon = $imageIconDefault;
					}
					else {
						$imageIcon = $imageIconDefault;
					}
					
					//$submenu_output .= '<div style="background: url('.$imageIcon.') no-repeat; width: 16px; height: 16px; float: left; margin: 5px 0px 0px 3px;">&nbsp;</div>';
				}
				
				
				$secExtension = null;
				if (array_key_exists('sec',$sub))
					$secExtension = $sub["sec"];
				if (strlen($secExtension) > 0) {
					$secUrl = $secExtension;
					$extensionInMenu = 'extension_in_menu='.$mainsec.'&amp;';
				}
				else {
					$secUrl = $mainsec;
					$extensionInMenu = '';
				}
				
				if (isset ($sub["text"]) || $selected) {
					$title = ' title="' . $sub["text"] . ' "';
				}
				else {
					$title = '';
				}
				
				$submenu_output .= '<a href="index.php?' .
					$extensionInMenu .
					'sec=' . $secUrl . '&amp;' .
					'sec2=' . $subsec2 .
					($sub["refr"] ?
						'&amp;refr=' . $sub["refr"] :
						'') .
					$link_add . '"' . $title . '>' .
					'<div class="' . $sub_tree_class . '">'.$sub["text"].'</div>' .
					'</a>';
				
				if (isset($sub['sub2'])) {
					//$submenu_output .= html_print_image("include/styles/images/toggle.png", true, array("class" => "toggle", "alt" => "toogle"));
				}
			
			}
			
			//Print second level submenu
			if (isset($sub['sub2'])) {
			
				$submenu2_list = '';
				
				$count_sub2 = 0;
				foreach ($sub['sub2'] as $key => $sub2) {
					
					if (enterprise_hook ('enterprise_acl', array ($config['id_user'], $mainsec, $subsec2, false, $key)) == false) {
						continue;
					}
					
					$count_sub2++;
					
					if (isset ($sub2["type"]) && $sub2["type"] == "direct") {
						if (isset ($sub2["subtype"]) && $sub2["subtype"] == "new_blank")
							$link = $key . '"' . 'target = \'_blank\'';
					}
					else
						$link = "index.php?sec=".$subsec2."&sec2=".$key;
					$class = "sub_subMenu";
					
					if ($key == $sec2) {
						$class .= " selected";
					}
					
					// Define submenu2 class to draw tree image
					if($count_sub2 >= count($sub['sub2'])) {
						$sub_tree_class = 'submenu_text submenu2_text_last';
					}
					else {
						$sub_tree_class = 'submenu_text submenu2_text_middle';
					}
					
					if (isset($sub2['title']))
						$sub_title = $sub2['title'];
					else
						$sub_title = '';
					$submenu2_list .= '<li class="'.$class.'" style="">';
					$submenu2_list .= '<a href="'.$link.'"><div class="' . $sub_tree_class . '" title="' . $sub2["text"] . '" >'.
											$sub2["text"].'</div></a></li>';
					$sub_title = '';
				}
				
				// Added a top on inline styles
				$top = menu_calculate_top($config['count_main_menu'], $count_sub, $count_sub2);

				//Add submenu2 to submenu string
				$submenu_output .= "<ul style= top:" . $top . "px;  id='sub" . str_replace(' ','_',$sub["id"]) . "' class=submenu2>";
				$submenu_output .= $submenu2_list;
				$submenu_output .= "</ul>";
			}
			
			//Submenu close list!
			$submenu_output .= '</li>';
		}
		
		// Choose valid section (sec)
		if (enterprise_hook ('enterprise_acl', array ($config['id_user'], $mainsec, $main["sec2"])) == false) {
			if ($count_sub_access > 0) {
				// If any susection have access but main section not, we change main link to first subsection found
				$main["sec2"] = $first_sub_sec2;
			}
			else {
				continue;
			}
		}
		
		if ($menu_selected)
			$seleccionado = 'selected';
		else
			$seleccionado = '';
			
		//Print out the first level
		$output .= '<li title="'.ucwords(str_replace(array("oper-","god-"),"",$id)).'" class="'.implode (" ", $classes).' ' . $seleccionado . '" id="icon_'.$id.'">';
						//onclick="location.href=\'index.php?sec='.$mainsec.'&amp;sec2='.$main["sec2"].($main["refr"] ? '&amp;refr='.$main["refr"] : '').'\'">';

		$length = strlen(__($main["text"]));
		$padding_top = ( $length >= 18) ? 6 : 12;
		
		$output .= '<div id="title_menu" style="color:#FFF; padding-top:'. $padding_top . 'px; display:none;">' . $main["text"] . '</div>';
		// Add the notification ball if defined
		if (isset($main["notification"])) {
			$output .= '<div class="notification_ball">' . $main["notification"] . '</div>';
		}
		$padding_top = 0;
		$length = 0;
		//$output .= html_print_image("include/styles/images/toggle.png", true, array("class" => "toggle", "alt" => "toogle"));
		if ($submenu_output != '') {
			//WARNING: IN ORDER TO MODIFY THE VISIBILITY OF MENU'S AND SUBMENU'S (eg. with cookies) YOU HAVE TO ADD TO THIS ELSEIF. DON'T MODIFY THE CSS
			if ($visible || in_array ("selected", $classes)) {
				$visible = true;
			}
			if (!$showSubsection) {
				$visible = false;
			}
			
			$top = menu_calculate_top($config["count_main_menu"], $count_sub);
			$output .= '<ul id="subicon_'.$id.'" class="submenu'.($visible ? '' : ' invisible').'" style="top: ' . $top . 'px">';
			$output .= $submenu_output;
			$output .= '</ul>';
		}
		$config["count_main_menu"]++;
		$output .= '</li>';
		echo $output;
		$menu_selected = false;
	}
	
	//Finish menu
	echo '</ul>';
	//Invisible UL for adding border-top
	echo '</div>';
}

/**
 * Get all the data structure of menu. Operation and Godmode
 *
 * @return array Menu structure.
 */
function menu_get_full_sec() {
	global $menu_operation;
	global $menu_godmode;
	
	if ($menu_godmode == null || $menu_operation == null) {
		return array();
	}
	else {
		$menu = $menu_operation + $menu_godmode;
	}
	
	unset($menu['class']);
	
	menu_add_extras($menu);
	
	return $menu;
}

/**
 * Build an extra access pages array and merge it with menu
 *
 * @param menu array (pass by reference)
 * 
 */
function menu_add_extras(&$menu) {
	global $config;
	
	$menu_extra = array();
	$menu_extra['gusuarios']['sub']['godmode/users/configure_user']['text'] = __('Configure user');
	$menu_extra['gusuarios']['sub']['godmode/users/configure_profile']['text'] = __('Configure profile');
	
	$menu_extra['gservers']['sub']['godmode/servers/manage_recontask_form']['text'] = __('Manage recontask');
	
	$menu_extra['gmodules']['sub']['godmode/modules/manage_network_templates_form']['text'] = __('Module templates management');
	$menu_extra['gmodules']['sub']['enterprise/godmode/modules/manage_inventory_modules_form']['text'] = __('Inventory modules management');
	$menu_extra['gmodules']['sub']['godmode/tag/edit_tag']['text'] = __('Tags management');
	
	$menu_extra['gagente']['sub']['godmode/agentes/configurar_agente']['text'] = __('Agents management');
	
	$menu_extra['estado']['sub']['operation/agentes/ver_agente']['text'] = __('View agent');
	
	$menu_extra['galertas']['sub']['godmode/alerts/configure_alert_template']['text'] = __('Configure alert template');
	
	$menu_extra['network']['sub']['operation/agentes/networkmap']['text'] = __('Manage network map');
	$menu_extra['network']['sub']['operation/visual_console/render_view']['text'] = __('View visual console');
	$menu_extra['network']['sub']['godmode/reporting/visual_console_builder']['text'] = __('Builder visual console');
	
	$menu_extra['eventos']['sub']['godmode/events/events']['text'] = __('Administration events');
	
	$menu_extra['reporting']['sub']['operation/reporting/reporting_viewer']['text'] = __('View reporting');
	$menu_extra['reporting']['sub']['operation/reporting/graph_viewer']['text'] = __('Graph viewer');
	
	$menu_extra['reporting']['sub']['godmode/reporting/graph_builder']['text'] = __('Manage custom graphs');
	$menu_extra['reporting']['sub']['godmode/reporting/graph_container']['text'] = __('View graph containers');
	$menu_extra['reporting']['sub']['godmode/reporting/create_container']['text'] = __('Manage graph containers');
	$menu_extra['reporting']['sub']['enterprise/godmode/reporting/graph_template_list']['text'] = __('View graph templates');
	$menu_extra['reporting']['sub']['enterprise/godmode/reporting/graph_template_editor']['text'] = __('Manage graph templates');
	$menu_extra['reporting']['sub']['enterprise/godmode/reporting/graph_template_item_editor']['text'] = __('Graph template items');
	$menu_extra['reporting']['sub']['enterprise/godmode/reporting/graph_template_wizard']['text'] = __('Graph template wizard');
	
	
	$menu_extra['reporting']['sub']['enterprise/dashboard/dashboard_replicate']['text'] = __('Copy dashboard');
	
	if ($config['activate_gis'])
		$menu_extra['godgismaps']['sub']['godmode/gis_maps/configure_gis_map']['text'] = __('Manage GIS Maps');
	
	$menu_extra['workspace']['sub']['operation/incidents/incident_statistics']['text'] = __('Incidents statistics');
	$menu_extra['workspace']['sub']['operation/messages/message_edit']['text'] = __('Manage messages');
	
	$menu_extra['gagente']['sub']['godmode/groups/configure_group']['text'] = __('Manage groups');
	$menu_extra['gagente']['sub']['godmode/groups/configure_modu_group']['text'] = __('Manage module groups');
	$menu_extra['gagente']['sub']['godmode/agentes/configure_field']['text'] = __('Manage custom field');
	
	$menu_extra['galertas']['sub']['godmode/alerts/configure_alert_action']['text'] = __('Manage alert actions');
	$menu_extra['galertas']['sub']['godmode/alerts/configure_alert_command']['text'] = __('Manage commands');
	$menu_extra['galertas']['sub']['enterprise/godmode/alerts/alert_events']['text'] = __('Manage event alerts');
	
	$menu_extra['gservers']['sub']['enterprise/godmode/servers/manage_export_form']['text'] = __('Manage export targets');
	
	$menu_extra['estado']['sub']['enterprise/godmode/services/manage_services']['text'] = __('Manage services');
	$menu_extra['estado']['sub']['godmode/snmpconsole/snmp_alert']['text'] = __('SNMP alerts');
	$menu_extra['estado']['sub']['godmode/snmpconsole/snmp_filters']['text'] = __('SNMP filters');
	$menu_extra['estado']['sub']['enterprise/godmode/snmpconsole/snmp_trap_editor']['text'] = __('SNMP trap editor');
	$menu_extra['estado']['sub']['snmpconsole']['sub2']['godmode/snmpconsole/snmp_trap_generator']['text'] = __('SNMP trap generator');
	
	$menu_extra['estado']['sub']['snmpconsole']['sub2']['operation/snmpconsole/snmp_view']['text'] = __('SNMP console');
	
	$menu_extra['workspace']['sub']['operation/incidents/incident_detail']['text'] = __('Manage incident');
	
	$menu_extra['reporting']['sub']['godmode/reporting/visual_console_builder']['text'] = __('Manage visual console');
	
	// Duplicate extensions as sec=extension to check it from url
	foreach ($menu as $k => $m) {
		if (!isset($m['sub'])) {
			continue;
		}
		foreach ($m['sub'] as $kk => $mm) {
			if (isset($mm['sec'])) {
				$menu_extra[$mm['sec']]['sub'][$kk]['text'] = $mm['text'];
			}
		}
	}
	
	$menu = array_merge_recursive($menu, $menu_extra);
	
	//Remove the duplicate the text entries.
	foreach ($menu as $k => $m) {
		if (!empty($m['text'])) {
			if (is_array($m['text'])) {
				$menu[$k]['text'] = reset($m['text']);
			}
		}
	}
}

/**
 * Get the sec list built in menu
 *
 * @param bool If true, the array returned will have the structure
 * to combo categories (optgroup)
 * 
 * @return array Sections list
 */
function menu_get_sec($with_categories = false) {
	$menu = menu_get_full_sec();
	unset($menu['class']);
	
	$in_godmode = false;
	foreach ($menu as $k => $v) {
		if ($with_categories) {
			if (!$in_godmode && $k[0] == 'g') {
				// Hack to dont confuse with gis activated because godmode 
				// sec starts with g (like gismaps)
				if ($k != 'gismaps') {
					$in_godmode = true;
				}
			}
			
			if ($in_godmode) {
				$category = __('Administration');
			}
			else {
				$category = __('Operation');
			}
			
			$sec_array[$k]['optgroup'] = $category;
			$sec_array[$k]['name'] = $v['text'];
		}
		else {
			$sec_array[$k] = $v['text'];
		}
	}
	return $sec_array;
}

/**
 * Get the sec list built in menu
 *
 * @param bool If true, the array returned will have the structure
 * to combo categories (optgroup)
 * 
 * @return array Sections list
 */
function get_sec($sec = false) {
	$menu = menu_get_full_sec();
	unset($menu['class']);
	
	$in_godmode = false;
	foreach ($menu as $k => $v) {
		if (isset($v["sub"][$sec]))
			return $k;
	}
	return false;
}

/**
 * Get the pages in a section
 *
 * @param string sec code
 * @param string menu hash. All the menu structure (For example
 * 		returned by menu_get_full_sec(), json encoded and after that 
 * 		base64 encoded. If this value is false this data is obtained from
 * 		menu_get_full_sec();
 * 
 * @return array Sections list
 */
function menu_get_sec_pages($sec, $menu_hash = false) {
	if (!$menu_hash) {
		$menu = menu_get_full_sec();
	}
	else {
		$menu = json_decode(base64_decode($menu_hash),true);
	}
	
	$sec2_array = array();
	
	if (isset($sec)) {
		
		// Get the sec2 of the main section
		$sec2_array[$menu[$sec]['sec2']] = $menu[$sec]['text'];
		
		
		// Get the sec2 of the subsections
		foreach ($menu[$sec]['sub'] as $k => $v) {
			// Avoid special cases of standalone windows
			if (preg_match('/^javascript:/', $k) || preg_match('/\.php/', $k)) {
				continue;
			}
			
			
			// If this value has various parameters, we only get the first
			$k = explode('&',$k);
			$k = $k[0];
			
			
			$sec2_array[$k] = $v['text'];
		}
		
	}
	
	return $sec2_array;
}

/**
 * Get the pages in a section2
 *
 * @param string sec code
 * @param string menu hash. All the menu structure (For example
 * 		returned by menu_get_full_sec(), json encoded and after that 
 * 		base64 encoded. If this value is false this data is obtained from
 * 		menu_get_full_sec();
 * 
 * @return array Sections list
 */
function menu_get_sec2_pages($sec, $sec2, $menu_hash = false) {
	if ($menu_hash === false) {
		$menu = menu_get_full_sec();
	}
	else {
		$menu = json_decode(base64_decode($menu_hash),true);
	}
	
	$sec3_array = array();
	
	if (isset($menu[$sec]['sub']) AND isset($menu[$sec]['sub'][$sec2]['sub2'])) {
		// Get the sec2 of the subsections
		foreach ($menu[$sec]['sub'][$sec2]['sub2'] as $k => $v) {
			$sec3_array[$k] = $v['text'];
		}
	}
	
	return $sec3_array;
}

/**
 * Check if a page (sec2) is in a section (sec)
 *
 * @param string section (sec) code
 * @param string page (sec2)code
 * 
 * @return true if the page is in section, false otherwise
 */
function menu_sec2_in_sec($sec,$sec2) {
	$sec2_array = menu_get_sec_pages($sec);
	
	// If this value has various parameters, we only get the first
	$sec2 = explode('&',$sec2);
	$sec2 = $sec2[0];
	
	if ($sec2_array != null && in_array($sec2,array_keys($sec2_array))) {
		return true;
	}
	
	return false;
}

function menu_sec3_in_sec2($sec,$sec2,$sec3) {
	$sec3_array = menu_get_sec2_pages($sec, $sec2, $menu_hash = false);
	
	// If this value has various parameters, we only get the first
	$sec3 = explode('&',$sec3);
	$sec3 = $sec3[0];
	
	if ($sec3_array != null && in_array($sec3,array_keys($sec3_array))) {
		return true;
	}
	
	return false;
}

// Positionate the menu element. Added a negative top.
// 35px is the height of a menu item
function menu_calculate_top($level1, $level2, $level3 = false) {
	$level2--;
	if ($level3 !== false) {
		// If level3 is set, the position is calculated like box is in the center.
		// wiouth considering level2 box can be moved.
		$level3--;
		$total = $level1 + $level3;
		$comp = $level3;
	} else {
		$total = $level1 + $level2;
		$comp = $level2;

	}
	// Positionate in the middle
	if ($total > 12 && (($total < 18) || (($level1 - $comp) <= 4))) {
		return - ( floor($comp/2) * 35);
	}
	// Positionate in the bottom
	if ($total >= 18) {
		return - $comp * 35;
	}
	// return 0 by default
	return 0;
}
?>