diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index 5767b9976e9..62de18a4235 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -37,11 +37,6 @@ require_once(DOL_DOCUMENT_ROOT."/core/class/html.formfile.class.php");
 require_once(DOL_DOCUMENT_ROOT."/lib/propal.lib.php");
 require_once(DOL_DOCUMENT_ROOT."/lib/functions2.lib.php");
 if ($conf->projet->enabled)   require_once(DOL_DOCUMENT_ROOT.'/projet/class/project.class.php');
-if ($conf->milestone->enabled)
-{
-	require_once(DOL_DOCUMENT_ROOT.'/milestone/lib/milestone.lib.php');
-	require_once(DOL_DOCUMENT_ROOT.'/milestone/class/milestone.class.php');
-}
 
 $langs->load('companies');
 $langs->load('propal');
@@ -77,6 +72,13 @@ $result = restrictedArea($user, $module, $objectid, $dbtable);
 // Nombre de ligne pour choix de produit/service predefinis
 $NBLINES=4;
 
+// Instantiate hooks of thirdparty module
+if (is_array($conf->hooks_modules) && !empty($conf->hooks_modules))
+{
+	$hooks = new Propal($db);
+	$hooks->callHooks('objectcard');
+}
+
 
 /******************************************************************************/
 /*                     Actions                                                */
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index db873d2b015..cd0caa1e33a 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -33,6 +33,9 @@
 
 class CommonObject
 {
+	// Instantiate classes of thirdparty module
+	var $objModules=array();
+	
 	/**
 	 *      \brief      Check if ref is used.
 	 * 		\return		int			<0 if KO, 0 if not found, >0 if found
@@ -1142,14 +1145,31 @@ class CommonObject
 	}
 	
 	/**
-	 *	Show add free products/services form
+	 *	Instantiate hooks of thirdparty module
+	 *	@param	$type	Type of hook
 	 */
-	function showAddFreeProductForm($dateSelector=0)
+	function callHooks($type='objectcard')
 	{
-		global $conf,$langs;
-		global $html,$bc,$var;
-
-		include(DOL_DOCUMENT_ROOT.'/core/tpl/addfreeproductform.tpl.php');
+		global $conf;
+		
+		foreach($conf->hooks_modules as $module => $hooks)
+		{
+			if ($conf->$module->enabled && in_array($type,$hooks))
+			{
+				// Include class and library of thirdparty module
+				if (file_exists(DOL_DOCUMENT_ROOT.'/'.$module.'/class/'.$module.'.class.php'))
+				{
+					require_once(DOL_DOCUMENT_ROOT.'/'.$module.'/class/'.$module.'.class.php');
+				}
+				if (file_exists(DOL_DOCUMENT_ROOT.'/'.$module.'/lib/'.$module.'.lib.php'))
+				{
+					require_once(DOL_DOCUMENT_ROOT.'/'.$module.'/lib/'.$module.'.lib.php');
+				}
+				
+				$classname = ucfirst($module);
+				$this->objModules[] = new $classname($this->db);
+			}
+		}
 	}
 	
 	/**
@@ -1162,6 +1182,17 @@ class CommonObject
 
 		include(DOL_DOCUMENT_ROOT.'/core/tpl/addpredefinedproductform.tpl.php');
 	}
+	
+	/**
+	 *	Show add free products/services form
+	 */
+	function showAddFreeProductForm($dateSelector=0)
+	{
+		global $conf,$langs;
+		global $html,$bc,$var;
+
+		include(DOL_DOCUMENT_ROOT.'/core/tpl/addfreeproductform.tpl.php');
+	}
 
 	/**
 	 *	Show linked object block
diff --git a/htdocs/core/class/conf.class.php b/htdocs/core/class/conf.class.php
index 13fd656ffc6..b2d882377c9 100644
--- a/htdocs/core/class/conf.class.php
+++ b/htdocs/core/class/conf.class.php
@@ -131,11 +131,21 @@ class Conf
 							//print 'xxx'.$params[0].'-'.$value;
 						}
 						// If this is constant for triggers activated by a module
-						elseif (preg_match('/^MAIN_MODULE_([A-Z_]+)_TRIGGERS$/i',$key,$regs))
+						elseif (preg_match('/^MAIN_MODULE_([A-Z_]+)_TRIGGERS$/i',$key,$reg))
 						{
-							$modulename = strtolower($regs[1]);
+							$modulename = strtolower($reg[1]);
 							$this->triggers_modules[] = DOL_DOCUMENT_ROOT.'/'.$modulename.'/inc/triggers/';
 						}
+						// If this is constant for hook activated by a module
+						elseif (preg_match('/^MAIN_MODULE_([A-Z_]+)_HOOKS$/i',$key,$reg))
+						{
+							$modulename = strtolower($reg[1]);
+							$params=explode(':',$value);
+							foreach($params as $value)
+							{
+								$this->hooks_modules[$modulename][]=$value;
+							}
+						}
 						// If this is constant to force a module directories (used to manage some exceptions)
 						// Should not be used by modules
 						elseif (preg_match('/^MAIN_MODULE_([A-Z_]+)_DIR_/i',$key,$reg))