diff --git a/demo/config.js b/demo/config.js
index 35f295624..cc3e5dfe7 100644
--- a/demo/config.js
+++ b/demo/config.js
@@ -1518,17 +1518,13 @@ Demo.CONSTANTS = {
     }, {pId: "0_1_33", id: "0_1_33_0", text: "重庆市区", value: "重庆市区", open: true}],
 
     TREE: [{id: -1, pId: -2, value: "根目录", text: "根目录"},
-        {id: -2, pId: -2, value: "根目录", text: "根目录"},
-        {id: -3, pId: -2, value: "根目录", text: "根目录"},
-        {id: -4, pId: -2, value: "根目录", text: "根目录"},
-        {id: -5, pId: -2, value: "根目录", text: "根目录"},
         {id: 1, pId: -1, value: "第一级目录1", text: "第一级目录1"},
         {id: 11, pId: 1, value: "第二级文件1", text: "第二级文件1"},
         {id: 12, pId: 1, value: "第二级目录2", text: "第二级目录2"},
         {id: 121, pId: 12, value: "第三级目录1", text: "第三级目录1"},
         {id: 122, pId: 12, value: "第三级文件1", text: "第三级文件1"},
         {id: 1211, pId: 121, value: "第四级目录1", text: "第四级目录1"},
-        {id: 12111, pId: 1211, value: "第五级文件1", text: "第五级文件1111111111111111111"},
+        {id: 12111, pId: 1211, value: "第五级文件1", text: "第五级文件111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"},
         {id: 2, pId: -1, value: "第一级目录2", text: "第一级目录2"},
         {id: 21, pId: 2, value: "第二级目录3", text: "第二级目录3"},
         {id: 22, pId: 2, value: "第二级文件2", text: "第二级文件2"},
diff --git a/demo/js/widget/singleselct/demo.single_select_combo.js b/demo/js/widget/singleselct/demo.single_select_combo.js
index 711e3c29f..7a9b78fc5 100644
--- a/demo/js/widget/singleselct/demo.single_select_combo.js
+++ b/demo/js/widget/singleselct/demo.single_select_combo.js
@@ -29,14 +29,14 @@ Demo.SingleSelectCombo = BI.inherit(BI.Widget, {
 
     _getItemsByTimes: function (items, times) {
         var res = [];
-        for (var i = (times - 1) * 10; items[i] && i < times * 10; i++) {
+        for (var i = (times - 1) * 100; items[i] && i < times * 100; i++) {
             res.push(items[i]);
         }
         return res;
     },
 
     _hasNextByTimes: function (items, times) {
-        return times * 10 < items.length;
+        return times * 100 < items.length;
     },
 
     _itemsCreator: function (options, callback) {
diff --git a/dist/bundle.js b/dist/bundle.js
index 15f2b481c..e895e35c4 100644
--- a/dist/bundle.js
+++ b/dist/bundle.js
@@ -97524,7 +97524,7 @@ BI.MultiSelectCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -97908,7 +97908,7 @@ BI.MultiSelectInsertCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -98275,7 +98275,7 @@ BI.MultiSelectInsertNoBarCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -106236,14 +106236,6 @@ BI.SingleSelectCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {
@@ -106514,14 +106506,6 @@ BI.SingleSelectInsertCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {
diff --git a/dist/demo.js b/dist/demo.js
index 3b8dd9cfb..8ab864216 100644
--- a/dist/demo.js
+++ b/dist/demo.js
@@ -13286,14 +13286,14 @@ Demo.SingleSelectCombo = BI.inherit(BI.Widget, {
 
     _getItemsByTimes: function (items, times) {
         var res = [];
-        for (var i = (times - 1) * 10; items[i] && i < times * 10; i++) {
+        for (var i = (times - 1) * 100; items[i] && i < times * 100; i++) {
             res.push(items[i]);
         }
         return res;
     },
 
     _hasNextByTimes: function (items, times) {
-        return times * 10 < items.length;
+        return times * 100 < items.length;
     },
 
     _itemsCreator: function (options, callback) {
@@ -16354,17 +16354,13 @@ Demo.CONSTANTS = {
     }, {pId: "0_1_33", id: "0_1_33_0", text: "重庆市区", value: "重庆市区", open: true}],
 
     TREE: [{id: -1, pId: -2, value: "根目录", text: "根目录"},
-        {id: -2, pId: -2, value: "根目录", text: "根目录"},
-        {id: -3, pId: -2, value: "根目录", text: "根目录"},
-        {id: -4, pId: -2, value: "根目录", text: "根目录"},
-        {id: -5, pId: -2, value: "根目录", text: "根目录"},
         {id: 1, pId: -1, value: "第一级目录1", text: "第一级目录1"},
         {id: 11, pId: 1, value: "第二级文件1", text: "第二级文件1"},
         {id: 12, pId: 1, value: "第二级目录2", text: "第二级目录2"},
         {id: 121, pId: 12, value: "第三级目录1", text: "第三级目录1"},
         {id: 122, pId: 12, value: "第三级文件1", text: "第三级文件1"},
         {id: 1211, pId: 121, value: "第四级目录1", text: "第四级目录1"},
-        {id: 12111, pId: 1211, value: "第五级文件1", text: "第五级文件1111111111111111111"},
+        {id: 12111, pId: 1211, value: "第五级文件1", text: "第五级文件111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"},
         {id: 2, pId: -1, value: "第一级目录2", text: "第一级目录2"},
         {id: 21, pId: 2, value: "第二级目录3", text: "第二级目录3"},
         {id: 22, pId: 2, value: "第二级文件2", text: "第二级文件2"},
diff --git a/dist/fineui.js b/dist/fineui.js
index 6706595a2..c6e95d45d 100644
--- a/dist/fineui.js
+++ b/dist/fineui.js
@@ -97767,7 +97767,7 @@ BI.MultiSelectCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -98151,7 +98151,7 @@ BI.MultiSelectInsertCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -98518,7 +98518,7 @@ BI.MultiSelectInsertNoBarCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -106479,14 +106479,6 @@ BI.SingleSelectCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {
@@ -106757,14 +106749,6 @@ BI.SingleSelectInsertCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {
diff --git a/dist/widget.js b/dist/widget.js
index 5b28b9a16..e3a07130b 100644
--- a/dist/widget.js
+++ b/dist/widget.js
@@ -9900,7 +9900,7 @@ BI.MultiSelectCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -10284,7 +10284,7 @@ BI.MultiSelectInsertCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -10651,7 +10651,7 @@ BI.MultiSelectInsertNoBarCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
@@ -18612,14 +18612,6 @@ BI.SingleSelectCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {
@@ -18890,14 +18882,6 @@ BI.SingleSelectInsertCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {
diff --git a/src/widget/multiselect/multiselect.combo.js b/src/widget/multiselect/multiselect.combo.js
index e3d97f523..ed7b16a8f 100644
--- a/src/widget/multiselect/multiselect.combo.js
+++ b/src/widget/multiselect/multiselect.combo.js
@@ -39,7 +39,7 @@ BI.MultiSelectCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
diff --git a/src/widget/multiselect/multiselect.insert.combo.js b/src/widget/multiselect/multiselect.insert.combo.js
index 5c680fd8e..67f711067 100644
--- a/src/widget/multiselect/multiselect.insert.combo.js
+++ b/src/widget/multiselect/multiselect.insert.combo.js
@@ -36,7 +36,7 @@ BI.MultiSelectInsertCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
diff --git a/src/widget/multiselect/multiselect.insert.combo.nobar.js b/src/widget/multiselect/multiselect.insert.combo.nobar.js
index d88703896..1be0850c3 100644
--- a/src/widget/multiselect/multiselect.insert.combo.nobar.js
+++ b/src/widget/multiselect/multiselect.insert.combo.nobar.js
@@ -39,7 +39,7 @@ BI.MultiSelectInsertNoBarCombo = BI.inherit(BI.Single, {
                 offset: {
                     left: 1,
                     top: 1,
-                    right: 2,
+                    right: 1,
                     bottom: 33
                 }
             },
diff --git a/src/widget/singleselect/singleselect.combo.js b/src/widget/singleselect/singleselect.combo.js
index 53ac26636..6fa71870c 100644
--- a/src/widget/singleselect/singleselect.combo.js
+++ b/src/widget/singleselect/singleselect.combo.js
@@ -30,14 +30,6 @@ BI.SingleSelectCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {
diff --git a/src/widget/singleselect/singleselect.insert.combo.js b/src/widget/singleselect/singleselect.insert.combo.js
index 46b601fe2..e44f158c1 100644
--- a/src/widget/singleselect/singleselect.insert.combo.js
+++ b/src/widget/singleselect/singleselect.insert.combo.js
@@ -30,14 +30,6 @@ BI.SingleSelectInsertCombo = BI.inherit(BI.Single, {
             type: "bi.single_select_trigger",
             height: o.height,
             // adapter: this.popup,
-            masker: {
-                offset: {
-                    left: 1,
-                    top: 1,
-                    right: 2,
-                    bottom: 33
-                }
-            },
             valueFormatter: o.valueFormatter,
             itemsCreator: function (op, callback) {
                 o.itemsCreator(op, function (res) {