diff --git a/dlls/jscript/array.c b/dlls/jscript/array.c
index 118624963cf..1bdc68e1139 100644
--- a/dlls/jscript/array.c
+++ b/dlls/jscript/array.c
@@ -599,7 +599,7 @@ static HRESULT sort_cmp(script_ctx_t *ctx, DispatchEx *cmp_func, VARIANT *v1, VA
         args[0] = *v2;
         args[1] = *v1;
 
-        hres = jsdisp_call_value(cmp_func, ctx->lcid, DISPATCH_METHOD, &dp, &res, ei, caller);
+        hres = jsdisp_call_value(cmp_func, DISPATCH_METHOD, &dp, &res, ei, caller);
         if(FAILED(hres))
             return hres;
 
diff --git a/dlls/jscript/dispex.c b/dlls/jscript/dispex.c
index 77a1fab5238..73382f18d55 100644
--- a/dlls/jscript/dispex.c
+++ b/dlls/jscript/dispex.c
@@ -239,7 +239,7 @@ static HRESULT set_this(DISPPARAMS *dp, DISPPARAMS *olddp, IDispatch *jsthis)
     return S_OK;
 }
 
-static HRESULT invoke_prop_func(DispatchEx *This, DispatchEx *jsthis, dispex_prop_t *prop, LCID lcid, WORD flags,
+static HRESULT invoke_prop_func(DispatchEx *This, DispatchEx *jsthis, dispex_prop_t *prop, WORD flags,
         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
 {
     HRESULT hres;
@@ -250,9 +250,9 @@ static HRESULT invoke_prop_func(DispatchEx *This, DispatchEx *jsthis, dispex_pro
             WARN("%s is not a constructor\n", debugstr_w(prop->name));
             return E_INVALIDARG;
         }
-        return prop->u.p->invoke(jsthis, lcid, flags, dp, retv, ei, caller);
+        return prop->u.p->invoke(jsthis, This->ctx->lcid, flags, dp, retv, ei, caller);
     case PROP_PROTREF:
-        return invoke_prop_func(This->prototype, jsthis, This->prototype->props+prop->u.ref, lcid, flags, dp, retv, ei, caller);
+        return invoke_prop_func(This->prototype, jsthis, This->prototype->props+prop->u.ref, flags, dp, retv, ei, caller);
     case PROP_VARIANT: {
         DISPPARAMS new_dp;
 
@@ -267,7 +267,7 @@ static HRESULT invoke_prop_func(DispatchEx *This, DispatchEx *jsthis, dispex_pro
         if(FAILED(hres))
             return hres;
 
-        hres = disp_call(V_DISPATCH(&prop->u.var), DISPID_VALUE, lcid, flags, &new_dp, retv, ei, caller);
+        hres = disp_call(This->ctx, V_DISPATCH(&prop->u.var), DISPID_VALUE, flags, &new_dp, retv, ei, caller);
 
         if(new_dp.rgvarg != dp->rgvarg) {
             heap_free(new_dp.rgvarg);
@@ -553,7 +553,7 @@ static HRESULT WINAPI DispatchEx_InvokeEx(IDispatchEx *iface, DISPID id, LCID lc
     switch(wFlags) {
     case DISPATCH_METHOD:
     case DISPATCH_CONSTRUCT:
-        hres = invoke_prop_func(This, This, prop, lcid, wFlags, pdp, pvarRes, &jsexcept, pspCaller);
+        hres = invoke_prop_func(This, This, prop, wFlags, pdp, pvarRes, &jsexcept, pspCaller);
         break;
     case DISPATCH_PROPERTYGET:
         hres = prop_get(This, prop, lcid, pdp, pvarRes, &jsexcept, pspCaller);
@@ -823,13 +823,13 @@ HRESULT jsdisp_get_id(DispatchEx *jsdisp, const WCHAR *name, DWORD flags, DISPID
     return DISP_E_UNKNOWNNAME;
 }
 
-HRESULT jsdisp_call_value(DispatchEx *disp, LCID lcid, WORD flags, DISPPARAMS *dp, VARIANT *retv,
+HRESULT jsdisp_call_value(DispatchEx *disp, WORD flags, DISPPARAMS *dp, VARIANT *retv,
         jsexcept_t *ei, IServiceProvider *caller)
 {
-    return disp->builtin_info->value_prop.invoke(disp, lcid, flags, dp, retv, ei, caller);
+    return disp->builtin_info->value_prop.invoke(disp, disp->ctx->lcid, flags, dp, retv, ei, caller);
 }
 
-HRESULT jsdisp_call(DispatchEx *disp, DISPID id, LCID lcid, WORD flags, DISPPARAMS *dp, VARIANT *retv,
+HRESULT jsdisp_call(DispatchEx *disp, DISPID id, WORD flags, DISPPARAMS *dp, VARIANT *retv,
         jsexcept_t *ei, IServiceProvider *caller)
 {
     dispex_prop_t *prop;
@@ -842,10 +842,10 @@ HRESULT jsdisp_call(DispatchEx *disp, DISPID id, LCID lcid, WORD flags, DISPPARA
     if(!prop)
         return DISP_E_MEMBERNOTFOUND;
 
-    return invoke_prop_func(disp, disp, prop, lcid, flags, dp, retv, ei, caller);
+    return invoke_prop_func(disp, disp, prop, flags, dp, retv, ei, caller);
 }
 
-HRESULT jsdisp_call_name(DispatchEx *disp, const WCHAR *name, LCID lcid, WORD flags, DISPPARAMS *dp, VARIANT *retv,
+HRESULT jsdisp_call_name(DispatchEx *disp, const WCHAR *name, WORD flags, DISPPARAMS *dp, VARIANT *retv,
         jsexcept_t *ei, IServiceProvider *caller)
 {
     dispex_prop_t *prop;
@@ -859,10 +859,10 @@ HRESULT jsdisp_call_name(DispatchEx *disp, const WCHAR *name, LCID lcid, WORD fl
     if(retv)
         V_VT(retv) = VT_EMPTY;
 
-    return invoke_prop_func(disp, disp, prop, lcid, flags, dp, retv, ei, caller);
+    return invoke_prop_func(disp, disp, prop, flags, dp, retv, ei, caller);
 }
 
-HRESULT disp_call(IDispatch *disp, DISPID id, LCID lcid, WORD flags, DISPPARAMS *dp, VARIANT *retv,
+HRESULT disp_call(script_ctx_t *ctx, IDispatch *disp, DISPID id, WORD flags, DISPPARAMS *dp, VARIANT *retv,
         jsexcept_t *ei, IServiceProvider *caller)
 {
     DispatchEx *jsdisp;
@@ -871,7 +871,7 @@ HRESULT disp_call(IDispatch *disp, DISPID id, LCID lcid, WORD flags, DISPPARAMS
 
     jsdisp = iface_to_jsdisp((IUnknown*)disp);
     if(jsdisp) {
-        hres = jsdisp_call(jsdisp, id, lcid, flags, dp, retv, ei, caller);
+        hres = jsdisp_call(jsdisp, id, flags, dp, retv, ei, caller);
         jsdisp_release(jsdisp);
         return hres;
     }
@@ -890,10 +890,10 @@ HRESULT disp_call(IDispatch *disp, DISPID id, LCID lcid, WORD flags, DISPPARAMS
         }
 
         TRACE("using IDispatch\n");
-        return IDispatch_Invoke(disp, id, &IID_NULL, lcid, flags, dp, retv, &ei->ei, &err);
+        return IDispatch_Invoke(disp, id, &IID_NULL, ctx->lcid, flags, dp, retv, &ei->ei, &err);
     }
 
-    hres = IDispatchEx_InvokeEx(dispex, id, lcid, flags, dp, retv, &ei->ei, caller);
+    hres = IDispatchEx_InvokeEx(dispex, id, ctx->lcid, flags, dp, retv, &ei->ei, caller);
     IDispatchEx_Release(dispex);
 
     return hres;
diff --git a/dlls/jscript/engine.c b/dlls/jscript/engine.c
index 5ae829ec7aa..a18eb6bf273 100644
--- a/dlls/jscript/engine.c
+++ b/dlls/jscript/engine.c
@@ -1550,7 +1550,7 @@ HRESULT new_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, j
         return E_FAIL;
     }
 
-    hres = disp_call(V_DISPATCH(&constr), DISPID_VALUE, ctx->parser->script->lcid,
+    hres = disp_call(ctx->parser->script, V_DISPATCH(&constr), DISPID_VALUE,
                      DISPATCH_CONSTRUCT, &dp, &var, ei, NULL/*FIXME*/);
     IDispatch_Release(V_DISPATCH(&constr));
     if(FAILED(hres))
@@ -1581,13 +1581,13 @@ HRESULT call_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags,
         switch(exprval.type) {
         case EXPRVAL_VARIANT:
             if(V_VT(&exprval.u.var) == VT_DISPATCH)
-                hres = disp_call(V_DISPATCH(&exprval.u.var), DISPID_VALUE, ctx->parser->script->lcid,
+                hres = disp_call(ctx->parser->script, V_DISPATCH(&exprval.u.var), DISPID_VALUE,
                         DISPATCH_METHOD, &dp, flags & EXPR_NOVAL ? NULL : &var, ei, NULL/*FIXME*/);
             else
                 hres = throw_type_error(ctx->var_disp->ctx, ei, IDS_NO_PROPERTY, NULL);
             break;
         case EXPRVAL_IDREF:
-            hres = disp_call(exprval.u.idref.disp, exprval.u.idref.id, ctx->parser->script->lcid,
+            hres = disp_call(ctx->parser->script, exprval.u.idref.disp, exprval.u.idref.id,
                     DISPATCH_METHOD, &dp, flags & EXPR_NOVAL ? NULL : &var, ei, NULL/*FIXME*/);
             break;
         case EXPRVAL_INVALID:
diff --git a/dlls/jscript/global.c b/dlls/jscript/global.c
index 6e932efddb6..442da9647c5 100644
--- a/dlls/jscript/global.c
+++ b/dlls/jscript/global.c
@@ -107,7 +107,7 @@ static HRESULT constructor_call(DispatchEx *constr, LCID lcid, WORD flags, DISPP
         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 {
     if(flags != DISPATCH_PROPERTYGET)
-        return jsdisp_call_value(constr, lcid, flags, dp, retv, ei, sp);
+        return jsdisp_call_value(constr, flags, dp, retv, ei, sp);
 
     V_VT(retv) = VT_DISPATCH;
     V_DISPATCH(retv) = (IDispatch*)_IDispatchEx_(constr);
diff --git a/dlls/jscript/jscript.h b/dlls/jscript/jscript.h
index 6f861b858f3..89eab82390b 100644
--- a/dlls/jscript/jscript.h
+++ b/dlls/jscript/jscript.h
@@ -130,10 +130,10 @@ HRESULT init_dispex(DispatchEx*,script_ctx_t*,const builtin_info_t*,DispatchEx*)
 HRESULT init_dispex_from_constr(DispatchEx*,script_ctx_t*,const builtin_info_t*,DispatchEx*);
 DispatchEx *iface_to_jsdisp(IUnknown*);
 
-HRESULT disp_call(IDispatch*,DISPID,LCID,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
-HRESULT jsdisp_call_value(DispatchEx*,LCID,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
-HRESULT jsdisp_call(DispatchEx*,DISPID,LCID,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
-HRESULT jsdisp_call_name(DispatchEx*,const WCHAR*,LCID,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
+HRESULT disp_call(script_ctx_t*,IDispatch*,DISPID,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
+HRESULT jsdisp_call_value(DispatchEx*,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
+HRESULT jsdisp_call(DispatchEx*,DISPID,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
+HRESULT jsdisp_call_name(DispatchEx*,const WCHAR*,WORD,DISPPARAMS*,VARIANT*,jsexcept_t*,IServiceProvider*);
 HRESULT disp_propget(IDispatch*,DISPID,LCID,VARIANT*,jsexcept_t*,IServiceProvider*);
 HRESULT disp_propput(IDispatch*,DISPID,LCID,VARIANT*,jsexcept_t*,IServiceProvider*);
 HRESULT jsdisp_propget(DispatchEx*,DISPID,LCID,VARIANT*,jsexcept_t*,IServiceProvider*);
diff --git a/dlls/jscript/jsutils.c b/dlls/jscript/jsutils.c
index cef141a5e31..5f5bdad5afa 100644
--- a/dlls/jscript/jsutils.c
+++ b/dlls/jscript/jsutils.c
@@ -219,7 +219,7 @@ HRESULT to_primitive(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret
 
         hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? toStringW : valueOfW, 0, &id);
         if(SUCCEEDED(hres)) {
-            hres = jsdisp_call(jsdisp, id, ctx->lcid, DISPATCH_METHOD, &dp, ret, ei, NULL /*FIXME*/);
+            hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, &dp, ret, ei, NULL /*FIXME*/);
             if(FAILED(hres)) {
                 WARN("call error - forwarding exception\n");
                 jsdisp_release(jsdisp);
@@ -235,7 +235,7 @@ HRESULT to_primitive(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret
 
         hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? valueOfW : toStringW, 0, &id);
         if(SUCCEEDED(hres)) {
-            hres = jsdisp_call(jsdisp, id, ctx->lcid, DISPATCH_METHOD, &dp, ret, ei, NULL /*FIXME*/);
+            hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, &dp, ret, ei, NULL /*FIXME*/);
             if(FAILED(hres)) {
                 WARN("call error - forwarding exception\n");
                 jsdisp_release(jsdisp);
diff --git a/dlls/jscript/object.c b/dlls/jscript/object.c
index 66e4b532d61..b947fd80724 100644
--- a/dlls/jscript/object.c
+++ b/dlls/jscript/object.c
@@ -78,7 +78,7 @@ static HRESULT Object_toLocaleString(DispatchEx *dispex, LCID lcid, WORD flags,
 
     TRACE("\n");
 
-    return jsdisp_call_name(dispex, toStringW, lcid, DISPATCH_METHOD, &params, retv, ei, sp);
+    return jsdisp_call_name(dispex, toStringW, DISPATCH_METHOD, &params, retv, ei, sp);
 }
 
 static HRESULT Object_valueOf(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
diff --git a/dlls/jscript/string.c b/dlls/jscript/string.c
index 355961a9c3c..2a023b7a9a2 100644
--- a/dlls/jscript/string.c
+++ b/dlls/jscript/string.c
@@ -854,7 +854,7 @@ static HRESULT rep_call(DispatchEx *func, const WCHAR *str, match_result_t *matc
     }
 
     if(SUCCEEDED(hres))
-        hres = jsdisp_call_value(func, lcid, DISPATCH_METHOD, &dp, &var, ei, caller);
+        hres = jsdisp_call_value(func, DISPATCH_METHOD, &dp, &var, ei, caller);
 
     for(i=0; i < parens_cnt+1; i++) {
         if(i != parens_cnt+1)