ErrStrs = {}; ErrStrs.USER_CANCELLED=localize("$$$/ScriptingSupport/Error/UserCancelled=用户取消了操作"); try {var idCnvM = charIDToTypeID( 'CnvM' );     var desc858 = new ActionDescriptor();     var idDpth = charIDToTypeID( 'Dpth' );     desc858.putInteger( idDpth, 8 ); executeAction( idCnvM, desc858, DialogModes.ALL ); } catch(e){if (e.toString().indexOf(ErrStrs.USER_CANCELLED)!=-1) {;} else{alert(localize("$$$/ScriptingSupport/Error/CommandNotAvailable=命令当前不可用"));}}