Index: ps/trunk/binaries/data/mods/public/gui/options/options.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/options/options.js
+++ ps/trunk/binaries/data/mods/public/gui/options/options.js
@@ -238,9 +238,11 @@
 		control.onMouseLeave = onUpdate;
 		break;
 	case "dropdown":
+	{
 		control = Engine.GetGUIObjectByName(category + "Dropdown[" + i + "]");
 		control.onSelectionChange = function(){};  // just the time to setup the value
 		let config;
+		let callbackFunction;
 
 		for (let param in option.parameters)
 		{
@@ -249,6 +251,10 @@
 			case "config":
 				config = Engine.ConfigDB_GetValue("user", key);
 				break;
+			case "function":
+				if (Engine[option.parameters.function])
+					callbackFunction = option.parameters.function;
+				break;
 			case "list":
 				control.list = option.parameters.list.map(e => translate(e.label));
 				let values = option.parameters.list.map(e => e.value);
@@ -260,18 +266,21 @@
 			}
 		}
 
-		onUpdate = function(key)
+		onUpdate = function(key, callbackFunction)
 		{
 			return function()
 			{
 				Engine.ConfigDB_CreateValue("user", key, this.list_data[this.selected]);
 				Engine.ConfigDB_SetChanges("user", true);
+				if (callbackFunction)
+					Engine[callbackFunction](this.list_data[this.selected]);
 				updateOptionPanel();
 			};
-		}(key);
+		}(key, callbackFunction);
 
 		control.onSelectionChange = onUpdate;
 		break;
+	}
 	default:
 		warn("Unknown option type " + option.type + ", assuming string.");
 		control = Engine.GetGUIObjectByName(category + "Input[" + i + "]");
@@ -359,7 +368,7 @@
 		// and the possible function calls (which are of number or string types)
 		if (control.parameters.function)
 		{
-			if (control.type !== "string" && control.type !== "number" && control.type !== "slider")
+			if (control.type != "string" && control.type != "number" && control.type != "slider" && control.type != "dropdown")
 			{
 				warn("Invalid type option " + control.type + " defined with function for " + item + ": will not be reverted");
 				continue;
Index: ps/trunk/binaries/data/mods/public/gui/options/options.json
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/options/options.json
+++ ps/trunk/binaries/data/mods/public/gui/options/options.json
@@ -166,9 +166,10 @@
 		{
 			"type": "dropdown",
 			"label": "Shadow Quality",
-			"tooltip": "Shadow map resolution. High values can crash the game when using a graphics card with low memory! REQUIRES GAME RESTART",
+			"tooltip": "Shadow map resolution. High values can crash the game when using a graphics card with low memory!",
 			"parameters": {
 				"config": "shadowquality",
+				"function": "Renderer_RecreateShadowMap",
 				"list": [
 					{ "value": -2, "label": "Very Low" },
 					{ "value": -1, "label": "Low" },
Index: ps/trunk/source/renderer/Renderer.h
===================================================================
--- ps/trunk/source/renderer/Renderer.h
+++ ps/trunk/source/renderer/Renderer.h
@@ -48,6 +48,7 @@
 class CTimeManager;
 class RenderPathVertexShader;
 class ScriptInterface;
+class ShadowMap;
 class SkyManager;
 class TerrainRenderer;
 class WaterManager;
@@ -330,6 +331,8 @@
 	 */
 	const Caps& GetCapabilities() const { return m_Caps; }
 
+	ShadowMap& GetShadowMap();
+
 	static void RegisterScriptFunctions(ScriptInterface& scriptInterface);
 
 	/**
Index: ps/trunk/source/renderer/Renderer.cpp
===================================================================
--- ps/trunk/source/renderer/Renderer.cpp
+++ ps/trunk/source/renderer/Renderer.cpp
@@ -2126,6 +2126,11 @@
 	return m->fontManager;
 }
 
+ShadowMap& CRenderer::GetShadowMap()
+{
+	return m->shadow;
+}
+
 void CRenderer::ResetState()
 {
 	// Clear all emitters, that were created in previous games
Index: ps/trunk/source/renderer/scripting/JSInterface_Renderer.h
===================================================================
--- ps/trunk/source/renderer/scripting/JSInterface_Renderer.h
+++ ps/trunk/source/renderer/scripting/JSInterface_Renderer.h
@@ -29,6 +29,7 @@
 {
 	std::string GetRenderPath(ScriptInterface::CxPrivate* pCxPrivate);
 	void SetRenderPath(ScriptInterface::CxPrivate* pCxPrivate, const std::string& name);
+	void RecreateShadowMap(ScriptInterface::CxPrivate* pCxPrivate);
 
 	DECLARE_BOOLEAN_SCRIPT_SETTING(Shadows);
 	DECLARE_BOOLEAN_SCRIPT_SETTING(ShadowPCF);
Index: ps/trunk/source/renderer/scripting/JSInterface_Renderer.cpp
===================================================================
--- ps/trunk/source/renderer/scripting/JSInterface_Renderer.cpp
+++ ps/trunk/source/renderer/scripting/JSInterface_Renderer.cpp
@@ -20,6 +20,7 @@
 #include "JSInterface_Renderer.h"
 #include "ps/Profile.h"
 #include "renderer/Renderer.h"
+#include "renderer/ShadowMap.h"
 
 #define IMPLEMENT_BOOLEAN_SCRIPT_SETTING(NAME, SCRIPTNAME) \
 bool JSI_Renderer::Get##SCRIPTNAME##Enabled(ScriptInterface::CxPrivate* UNUSED(pCxPrivate)) \
@@ -60,6 +61,11 @@
 	g_Renderer.SetRenderPath(CRenderer::GetRenderPathByName(name));
 }
 
+void JSI_Renderer::RecreateShadowMap(ScriptInterface::CxPrivate* UNUSED(pCxPrivate))
+{
+	g_Renderer.GetShadowMap().RecreateTexture();
+}
+
 
 #define REGISTER_BOOLEAN_SCRIPT_SETTING(NAME) \
 scriptInterface.RegisterFunction<bool, &JSI_Renderer::Get##NAME##Enabled>("Renderer_Get" #NAME "Enabled"); \
@@ -69,6 +75,7 @@
 {
 	scriptInterface.RegisterFunction<std::string, &JSI_Renderer::GetRenderPath>("Renderer_GetRenderPath");
 	scriptInterface.RegisterFunction<void, std::string, &JSI_Renderer::SetRenderPath>("Renderer_SetRenderPath");
+	scriptInterface.RegisterFunction<void, &JSI_Renderer::RecreateShadowMap>("Renderer_RecreateShadowMap");
 	REGISTER_BOOLEAN_SCRIPT_SETTING(Shadows);
 	REGISTER_BOOLEAN_SCRIPT_SETTING(ShadowPCF);
 	REGISTER_BOOLEAN_SCRIPT_SETTING(Particles);