diff --git a/css/grid.scss b/css/grid.scss
index 2d33fd8..93e9bf2 100644
--- a/css/grid.scss
+++ b/css/grid.scss
@@ -17,6 +17,7 @@
 
     & {
         --hover-bg-color: lightyellow;
+        --link-fore-color: #1890ff;
         --header-border-color: #adaba9;
         --header-bg-color: #fafafa;
         --header-fore-color: #000;
@@ -281,6 +282,26 @@
                             top: calc(var(--line-height) + 2px);
                         }
                     }
+
+                    .icon {
+                        display: flex;
+                        cursor: pointer;
+                        height: var(--line-height);
+                        justify-content: center;
+                        align-items: center;
+                        position: relative;
+
+                        svg {
+                            width: 16px;
+                            height: 16px;
+                            fill: var(--link-fore-color);
+                            transition: opacity .12s ease;
+                        }
+
+                        &:hover svg {
+                            opacity: .4;
+                        }
+                    }
                 }
             }
         }
diff --git a/css/tooltip.scss b/css/tooltip.scss
index dc4b6bc..9c6db94 100644
--- a/css/tooltip.scss
+++ b/css/tooltip.scss
@@ -9,7 +9,7 @@
 }
 
 .tooltip-wrapper {
-    position: fixed;
+    position: absolute;
     word-wrap: break-word;
     height: auto;
     text-align: left;
diff --git a/lib/ui/grid.html b/lib/ui/grid.html
index ad9a212..9ac0111 100644
--- a/lib/ui/grid.html
+++ b/lib/ui/grid.html
@@ -58,7 +58,8 @@
           enabled: 'enabled'
         },
         { key: 'c3', caption: 'column 3', width: 90 },
-        { key: 'c4', caption: 'Note', type: Grid.ColumnTypes.Input }
+        { key: 'c4', caption: 'Note', type: Grid.ColumnTypes.Input },
+        { key: 'c5', type: Grid.ColumnTypes.Icon, text: 'times', tooltip: 'Delete' }
       ];
       grid.columnChanged = (type, index, value) => console.log(`column (${index}), ${type}, ${value}`);
       grid.cellClicked = (rId, cId) => console.log(`row (${rId}), column (${cId}) clicked.`);
diff --git a/lib/ui/grid.js b/lib/ui/grid.js
index 0563e35..3ffcfae 100644
--- a/lib/ui/grid.js
+++ b/lib/ui/grid.js
@@ -1,9 +1,10 @@
 import { global, isPositive, isMobile, throttle, truncate } from "../utility";
 import { nullOrEmpty } from "../utility/strings";
 import { r } from "../utility/lgres";
-import { createIcon } from "../ui/icon";
-import { createCheckbox } from "../ui/checkbox";
-import Dropdown from "../ui/dropdown";
+import { createIcon } from "./icon";
+import { createCheckbox } from "./checkbox";
+import { setTooltip } from "./tooltip";
+import Dropdown from "./dropdown";
 
 const ColumnChangedType = {
     Reorder: 'reorder',
@@ -44,8 +45,6 @@ class GridColumn {
 
     static setValue(element, val) { element.innerText = val }
 
-    static getValue(element) { return element.innerText }
-
     static setStyle(element, style) {
         for (let css of Object.entries(style)) {
             element.style.setProperty(css[0], css[1]);
@@ -157,11 +156,45 @@ class GridCheckboxColumn extends GridColumn {
     static setEnabled(element, enabled) { element.querySelector('input').disabled = enabled === false }
 }
 
+class GridIconColumn extends GridColumn {
+    static create() {
+        const element = document.createElement('span');
+        element.className = 'icon';
+        // element.appendChild(document.createElement('layer'));
+        return element;
+    }
+
+    static setValue(element, val, item, col) {
+        let type = col.iconType;
+        if (typeof type === 'function') {
+            type = type(item);
+        }
+        type ??= 'fa-regular';
+        if (element.dataset.type !== type || element.dataset.icon !== val) {
+            const icon = createIcon(type, val);
+            // const layer = element.children[0];
+            element.replaceChildren(icon);
+            !nullOrEmpty(col.tooltip) && setTooltip(icon, col.tooltip);
+            element.dataset.type = type;
+            element.dataset.icon = val;
+        }
+    }
+
+    static setEnabled(element, enabled) {
+        if (enabled === false) {
+            element.classList.add('disabled');
+        } else {
+            element.classList.remove('disabled');
+        }
+    }
+}
+
 const ColumnTypes = {
     0: GridColumn,
     1: GridInputColumn,
     2: GridDropdownColumn,
-    3: GridCheckboxColumn
+    3: GridCheckboxColumn,
+    4: GridIconColumn
 };
 
 class Grid {
@@ -215,6 +248,7 @@ class Grid {
         Input: 1,
         Dropdown: 2,
         Checkbox: 3,
+        Icon: 4,
         isCheckbox(type) { return type === 3 }
     };
 
@@ -533,7 +567,7 @@ class Grid {
             } else {
                 col.autoResize = true;
                 this.#needResize = true;
-                sizer.innerText = col.caption;
+                sizer.innerText = col.caption ?? '';
                 let width = sizer.offsetWidth + 22;
                 if (col.allcheck && isCheckbox) {
                     width += 32;
@@ -587,7 +621,7 @@ class Grid {
                     caption.style.setProperty(css[0], css[1]);
                 }
             }
-            caption.innerText = col.caption;
+            caption.innerText = col.caption ?? '';
             wrapper.appendChild(caption);
             // order arrow
             if (col.sortable) {
@@ -608,7 +642,7 @@ class Grid {
                 th.appendChild(spliter);
             }
             // tooltip
-            !nullOrEmpty(col.tooltip) && th.setAttribute('title', col.tooltip);
+            // !nullOrEmpty(col.tooltip) && setTooltip(th, col.tooltip);
             header.appendChild(th);
         }
         const placeholder = document.createElement('th');
@@ -729,7 +763,7 @@ class Grid {
                                 type ??= GridColumn;
                                 this.#colTypes[col.key] = type;
                             }
-                            cell.appendChild(type.create());
+                            cell.appendChild(type.create(col));
                         }
 
                     }
@@ -796,10 +830,10 @@ class Grid {
                 const isCheckbox = Grid.ColumnTypes.isCheckbox(col.type);
                 const type = isCheckbox ? GridCheckboxColumn : this.#colTypes[col.key] ?? GridColumn;
                 let element;
-                if (!isCheckbox && selectChanged) {
-                    element = selected && typeof type.createEdit === 'function' ?
+                if (!isCheckbox && selectChanged && typeof type.createEdit === 'function') {
+                    element = selected ?
                         type.createEdit(e => this.#onRowChanged(e, startIndex + i, col, type.getValue(e))) :
-                        type.create();
+                        type.create(col);
                     cell.replaceChildren(element);
                 } else {
                     element = cell.children[0];
diff --git a/lib/ui/tooltip.js b/lib/ui/tooltip.js
index 0a4ac06..d58bc3b 100644
--- a/lib/ui/tooltip.js
+++ b/lib/ui/tooltip.js
@@ -23,14 +23,20 @@ function setTooltip(container, content) {
     container.addEventListener('mouseenter', () => {
         tid && clearTimeout(tid);
         tid = setTimeout(() => {
+            while (container?.offsetWidth == null) {
+                container = container.parentElement;
+            }
+            if (container == null) {
+                return;
+            }
             let left = container.offsetLeft;
             let top = container.offsetTop;
-            let parent = container.parentElement;
-            while (parent != null) {
-                left -= parent.scrollLeft;
-                top -= parent.scrollTop;
-                parent = parent.parentElement;
-            }
+            // let parent = container.parentElement;
+            // while (parent != null) {
+            //     left -= parent.scrollLeft;
+            //     top -= parent.scrollTop;
+            //     parent = parent.parentElement;
+            // }
             left -= wrapper.offsetWidth / 2 - container.offsetWidth / 2;
             top -= wrapper.offsetHeight + 14;
             wrapper.style.left = `${left}px`;