diff --git a/src/panel.c b/src/panel.c
index e51a695..21604e4 100644
--- a/src/panel.c
+++ b/src/panel.c
@@ -123,7 +123,7 @@ void cleanup_panel()
 
 void init_panel()
 {
-	int i;
+	int i, j;
 	Panel *p;
 
 	if (panel_config.monitor > (server.nb_monitor-1)) {
@@ -170,9 +170,15 @@ void init_panel()
 		p->g_task.area.panel = p;
 		init_panel_size_and_position(p);
 		// add childs
-		if (clock_enabled) {
-			init_clock_panel(p);
-			p->area.list = g_slist_append(p->area.list, &p->clock);
+		// TODO : should respect the order of 'panel_items' config parameter
+		if (launcher_enabled) {
+			init_launcher_panel(p);
+			p->area.list = g_slist_append(p->area.list, &p->launcher);
+		}
+		p->nb_desktop = server.nb_desktop;
+		p->taskbar = calloc(p->nb_desktop, sizeof(Taskbar));
+		for (j=0 ; j < p->nb_desktop ; j++) {
+			p->area.list = g_slist_append(p->area.list, &p->taskbar[j]);
 		}
 #ifdef ENABLE_BATTERY
 		if (battery_enabled) {
@@ -180,16 +186,16 @@ void init_panel()
 			p->area.list = g_slist_append(p->area.list, &p->battery);
 		}
 #endif
-		if (launcher_enabled) {
-			init_launcher_panel(p);
-			p->area.list = g_slist_append(p->area.list, &p->launcher);
-		}
 		// systray only on first panel
 		if (systray.area.on_screen && i == 0) {
 			init_systray_panel(p);
 			p->area.list = g_slist_append(p->area.list, &systray);
 			refresh_systray = 1;
 		}
+		if (clock_enabled) {
+			init_clock_panel(p);
+			p->area.list = g_slist_append(p->area.list, &p->clock);
+		}
 
 		// catch some events
 		XSetWindowAttributes att = { .colormap=server.colormap, .background_pixel=0, .border_pixel=0 };
@@ -304,29 +310,33 @@ void init_panel_size_and_position(Panel *panel)
 int resize_panel(void *obj)
 {
 	Panel *panel = (Panel*)obj;
-//printf("resize_panel : taskbar\n");
+	int size, nb_by_content=0, nb_by_layout=0;
+	Area *a = (Area*)obj;
+	int paddingx = a->paddingx;;
 
-	if (panel_horizontal) {
-		int taskbar_width, modulo_width = 0;
-
-		taskbar_width = panel->area.width - (2 * panel->area.paddingxlr) - (2 * panel->area.bg->border.width);
-		if (panel->clock.area.on_screen && panel->clock.area.width)
-			taskbar_width -= (panel->clock.area.width + panel->area.paddingx);
-		if (panel->launcher.area.on_screen && panel->launcher.area.width)
-			taskbar_width -= (panel->launcher.area.width + panel->area.paddingx);
-	#ifdef ENABLE_BATTERY
-		if (panel->battery.area.on_screen && panel->battery.area.width)
-			taskbar_width -= (panel->battery.area.width + panel->area.paddingx);
-	#endif
-		// TODO : systray only on first panel. search better implementation !
-		if (systray.area.on_screen && systray.area.width && panel == &panel1[0])
-			taskbar_width -= (systray.area.width + panel->area.paddingx);
-
-		if (panel_mode == MULTI_DESKTOP) {
-			int width = taskbar_width - ((panel->nb_desktop-1) * panel->area.paddingx);
-			taskbar_width = width / panel->nb_desktop;
-			modulo_width = width % panel->nb_desktop;
+	if (panel_horizontal) {		
+		// detect free size for SIZE_BY_LAYOUT's Area
+		size = a->width - (2 * a->paddingxlr) - (2 * a->bg->border.width);
+		GSList *l;
+		for (l = ((Area*)obj)->list ; l ; l = l->next) {
+			a = (Area*)l->data;
+			if (a->on_screen && a->width && a->size_mode == SIZE_BY_CONTENT) {
+				size -= a->width;
+				nb_by_content++;
+			}
+			if (a->on_screen && a->size_mode == SIZE_BY_LAYOUT)
+				nb_by_layout++;
 		}
+		if (nb_by_content+nb_by_layout)
+			size -= ((nb_by_content+nb_by_layout-1) * paddingx);
+		//printf("resize_panel : size_panel %d, size_layout %d\n", panel->area.width, size);
+
+		int width=0, modulo=0;
+		if (nb_by_layout) {
+			width = size / nb_by_layout;
+			modulo = size % nb_by_layout;
+		}
+		//printf("   content %d, layout %d, width %d, modulo %d\n", nb_by_content, nb_by_layout, width, modulo);
 
 		// change posx and width for all taskbar
 		int i, posx;
@@ -335,57 +345,55 @@ int resize_panel(void *obj)
 			posx += (panel->launcher.area.width + panel->area.paddingx);
 		for (i=0 ; i < panel->nb_desktop ; i++) {
 			panel->taskbar[i].area.posx = posx;
-			panel->taskbar[i].area.width = taskbar_width;
+			panel->taskbar[i].area.width = width;
 			panel->taskbar[i].area.resize = 1;
-			if (modulo_width) {
+			if (modulo) {
 				panel->taskbar[i].area.width++;
-				modulo_width--;
+				modulo--;
 			}
+			//printf("   width %d\n", panel->taskbar[i].area.width);
 			//printf("taskbar %d : posx %d, width, %d, posy %d\n", i, posx, panel->taskbar[i].area.width, posx + panel->taskbar[i].area.width);
 			if (panel_mode == MULTI_DESKTOP)
 				posx += panel->taskbar[i].area.width + panel->area.paddingx;
 		}
 	}
 	else {
-		int taskbar_height, modulo_height = 0;
-		int i, posy;
+		// detect free size for SIZE_BY_LAYOUT's Area
+		size = a->height - (2 * a->paddingxlr) - (2 * a->bg->border.width);
+		GSList *l;
+		for (l = ((Area*)obj)->list ; l ; l = l->next) {
+			a = (Area*)l->data;
+			if (a->on_screen && a->height && a->size_mode == SIZE_BY_CONTENT) {
+				size -= a->height;
+				nb_by_content++;
+			}
+			if (a->on_screen && a->size_mode == SIZE_BY_LAYOUT)
+				nb_by_layout++;
+		}
+		if (nb_by_content+nb_by_layout)
+			size -= ((nb_by_content+nb_by_layout-1) * paddingx);
 
-		taskbar_height = panel->area.height - (2 * panel->area.paddingxlr) - (2 * panel->area.bg->border.width);
-		if (panel->clock.area.on_screen && panel->clock.area.height)
-			taskbar_height -= (panel->clock.area.height + panel->area.paddingx);
-		if (panel->launcher.area.on_screen && panel->launcher.area.height)
-			taskbar_height -= (panel->launcher.area.height + panel->area.paddingx);
-	#ifdef ENABLE_BATTERY
-		if (panel->battery.area.on_screen && panel->battery.area.height)
-			taskbar_height -= (panel->battery.area.height + panel->area.paddingx);
-	#endif
-		// TODO : systray only on first panel. search better implementation !
-		if (systray.area.on_screen && systray.area.height && panel == &panel1[0])
-			taskbar_height -= (systray.area.height + panel->area.paddingx);
-
-		posy = panel->area.height - panel->area.bg->border.width - panel->area.paddingxlr - taskbar_height;
-		if (panel->launcher.area.on_screen && panel->launcher.area.height)
-			posy -= (panel->launcher.area.height + panel->area.paddingx);
-		if (panel_mode == MULTI_DESKTOP) {
-			int height = taskbar_height - ((panel->nb_desktop-1) * panel->area.paddingx);
-			taskbar_height = height / panel->nb_desktop;
-			modulo_height = height % panel->nb_desktop;
+		int width=0, modulo=0;
+		if (nb_by_layout) {
+			width = size / nb_by_layout;
+			modulo = size % nb_by_layout;
 		}
 
 		// change posy and height for all taskbar
+		int i, posy;
 		for (i=0 ; i < panel->nb_desktop ; i++) {
 			panel->taskbar[i].area.posy = posy;
-			panel->taskbar[i].area.height = taskbar_height;
+			panel->taskbar[i].area.height = width;
 			panel->taskbar[i].area.resize = 1;
-			if (modulo_height) {
+			if (modulo) {
 				panel->taskbar[i].area.height++;
-				modulo_height--;
+				modulo--;
 			}
 			if (panel_mode == MULTI_DESKTOP)
 				posy += panel->taskbar[i].area.height + panel->area.paddingx;
 		}
 	}
-	return 0;
+	return 1;
 }
 
 
diff --git a/src/systray/systraybar.c b/src/systray/systraybar.c
index a8e0fbc..9592fdc 100644
--- a/src/systray/systraybar.c
+++ b/src/systray/systraybar.c
@@ -375,7 +375,7 @@ gboolean add_icon(Window id)
 	XSetWindowAttributes set_attr;
 	Visual* visual = server.visual;
 	//printf("icon with depth: %d, width %d, height %d\n", attr.depth, attr.width, attr.height);
-	printf("icon with depth: %d\n", attr.depth);
+	//printf("icon with depth: %d\n", attr.depth);
 	if (attr.depth != server.depth || systray.alpha != 100 || systray.brightness != 0 || systray.saturation != 0) {
 		visual = attr.visual;
 		set_attr.colormap = attr.colormap;
diff --git a/src/taskbar/taskbar.c b/src/taskbar/taskbar.c
index c53712a..bb351fe 100644
--- a/src/taskbar/taskbar.c
+++ b/src/taskbar/taskbar.c
@@ -60,11 +60,6 @@ void init_taskbar()
 	for (i=0 ; i < nb_panel ; i++) {
 		panel = &panel1[i];
 
-		if (panel->taskbar) {
-			free(panel->taskbar);
-			panel->taskbar = 0;
-		}
-
 		if (panel->g_taskbar.bg == 0) {
 			panel->g_taskbar.bg = &g_array_index(backgrounds, Background, 0);
 			panel->g_taskbar.area.bg = panel->g_taskbar.bg;
@@ -159,17 +154,12 @@ void init_taskbar()
 		//printf("monitor %d, task_maximum_width %d\n", panel->monitor, panel->g_task.maximum_width);
 
 		Taskbar *tskbar;
-		panel->nb_desktop = server.nb_desktop;
-		panel->taskbar = calloc(panel->nb_desktop, sizeof(Taskbar));
 		for (j=0 ; j < panel->nb_desktop ; j++) {
 			tskbar = &panel->taskbar[j];
 			memcpy(&tskbar->area, &panel->g_taskbar, sizeof(Area));
 			tskbar->desktop = j;
 			if (j == server.desktop && panel->g_taskbar.use_active)
 				tskbar->area.bg = panel->g_taskbar.bg_active;
-
-			// add taskbar to the panel
-			panel->area.list = g_slist_append(panel->area.list, tskbar);
 		}
 	}
 }