function V6_do(o, str){
	var selectAnyone=false;
	for(var i=0; i<o.byid.length; i++){
		if(o.byid[i].checked){
			selectAnyone=true;
			break;
		}
	}
	
	if(!selectAnyone){
		alert('请先选择帖子');
		o.doOther.selectedIndex=0;
		return false;
	}
	
	if(str=='del'){
		if(confirm('确认删除选中的帖子吗？')){
			o._do.value='删除';
			o.submit();
		}
	}
	else{
		if(this.value!=''){
			if(confirm('确认 >>'+o.doOther.value+'<< 选中的帖子吗？')){
				o._do.value=o.doOther.value;
				o.submit();
			}
		}
		o.doOther.selectedIndex=0;
	}
	return true;
}