extjs 4.0.7 grid复制有关问题

extjs 4.0.7 grid复制问题
在百度上搜过来的，不知道原来的出处，可以解决ext 4.0.7的grid复制问题

.x-grid-cell, .x-grid-row, .x-selectable, .x-selectable *{-moz-user-select: -moz-all !important;-khtml-user-select: text! important ;-webkit-user-select: text! important ;   }

Ext.view.TableChunker.metaRowTpl = [            '<tr {[this.embedRowAttr()]}>',            '<tpl for="columns">',            '<td {{id}-tdAttr}><div style="{{id}-style}; text-align: {align};">{{id}}</div></td>',            '</tpl>',            '</tr>'        ];Ext.core.Element.prototype.unselectable = function() {            var me = this;            if (me.dom.className.match(/(x-grid-table|x-grid-view)/)) {                return me;            }            me.dom.unselectable = "on";            me.swallowEvent("selectstart", true);            me.applyStyles("-moz-user-select:none;-khtml-user-select:none;");            me.addCls(Ext.baseCSSPrefix + 'unselectable');            return me;        };