EXT Gridpanel支持复制

if(!Ext.grid.GridView.prototype.templates)
{
	Ext.grid.GridView.prototype.templates = {};
}
Ext.grid.GridView.prototype.templates.cell = new Ext.Template(
		'<td class="x-grid3-col x-grid3-cell x-grid3-td-{id} x-selectable {css}" style="{style}" tabIndex="0" {cellAttr}>',
		'<div class="x-grid3-cell-inner x-grid3-col-{id}" {attr}>{value}</div>',
		'</td>');

必须放到onready外面，而且是文件的最下面