/**
* 取得被选中行的键值
*/
function getSelectedValue(o){
    if(null == o ){ return ; }
    var results = new Array();
    for(var i=0; i<o.getSelectedCount();i++){
          results[i] = o.getSelected().getSelectedRow(i).values;
    }
        return results;
}

/**
* 记录是否被多选
*/
function isMultiSelected(o){
    return o.getSelectedCount()>1;
}


/**
* 判断记录是否被选中
*/
function hasSelected(o){
    return o.getSelectedCount()>0;
}

/**
* 
*/
function getLastSelectedIndex(o){
	var lastRow = o.getSelected().lastRow();
	return o.getRowIndex(lastRow);	
}