NPN_Evaluate

    sprintf(buffer, 
	"if ($('#'+%d.length != 0) { $('#'+%d.remove(); }", This->id, This->id );
    
    if( NPERR_NO_ERROR == NPN_GetValue(instance, NPNVWindowNPObject, &plugin) )
    {
        NPString script;
        script.utf8characters = buffer;
        script.utf8length = strlen(script.utf8characters);

        NPVariant result;

        if (NPN_Evaluate(instance, plugin, &script, &result))  
		{ 
			NPN_ReleaseVariantValue(&result);
		}
    }
    NPN_ReleaseObject(plugin);