.ch_about_us {background: url('images/about_us.png') no-repeat center center;background-size:16px 16px;}
.ch_add {background: url('images/add.png') no-repeat center center;background-size:16px 16px;}
.ch_author {background: url('images/author.png') no-repeat center center;background-size:16px 16px;}
.ch_clear {background: url('images/clear.png') no-repeat center center;background-size:16px 16px;}
.ch_close_req {background: url('images/close_req.png') no-repeat center center;background-size:16px 16px;}
.ch_close {background: url('images/close.png') no-repeat center center;background-size:16px 16px;}
.ch_complain {background: url('images/complain.png') no-repeat center center;background-size:16px 16px;}
.ch_config_data {background: url('images/config_data.png') no-repeat center center;background-size:16px 16px;}
.ch_content {background: url('images/content.png') no-repeat center center;background-size:16px 16px;}
.ch_cooperation {background: url('images/cooperation.png') no-repeat center center;background-size:16px 16px;}
.ch_create_admin {background: url('images/create_admin.png') no-repeat center center;background-size:16px 16px;}
.ch_cusromer {background: url('images/cusromer.png') no-repeat center center;background-size:16px 16px;}
.ch_delete {background: url('images/delete.png') no-repeat center center;background-size:16px 16px;}
.ch_demand {background: url('images/demand.png') no-repeat center center;background-size:16px 16px;}
.ch_edit {background: url('images/edit.png') no-repeat center center;background-size:16px 16px;}
.ch_fold {background: url('images/fold.png') no-repeat center center;background-size:16px 16px;}
.ch_follow {background: url('images/follow.png') no-repeat center center;background-size:16px 16px;}
.ch_freeze {background: url('images/freeze.png') no-repeat center center;background-size:16px 16px;}
.ch_goods {background: url('images/goods.png') no-repeat center center;background-size:16px 16px;}
.ch_house_select {background: url('images/house_select.png') no-repeat center center;background-size:16px 16px;}
.ch_house {background: url('images/house.png') no-repeat center center;background-size:16px 16px;}
.ch_interview {background: url('images/interview.png') no-repeat center center;background-size:16px 16px;}
.ch_invalid {background: url('images/invalid.png') no-repeat center center;background-size:16px 16px;}
.ch_link_c {background: url('images/link_c.png') no-repeat center center;background-size:16px 16px;}
.ch_link_house {background: url('images/link_house.png') no-repeat center center;background-size:16px 16px;}
.ch_log {background: url('images/log.png') no-repeat center center;background-size:16px 16px;}
.ch_login {background: url('images/login.png') no-repeat center center;background-size:16px 16px;}
.ch_maintain_key {background: url('images/maintain_key.png') no-repeat center center;background-size:16px 16px;}
.ch_message {background: url('images/message.png') no-repeat center center;background-size:16px 16px;}
.ch_new_message {background: url('images/new_message.png') no-repeat center center;background-size:16px 16px;}
.ch_next {background: url('images/next.png') no-repeat center center;background-size:16px 16px;}
.ch_open_city {background: url('images/open_city.png') no-repeat center center;background-size:16px 16px;}
.ch_pack_up {background: url('images/pack_up.png') no-repeat center center;background-size:16px 16px;}
.ch_query {background: url('images/query.png') no-repeat center center;background-size:16px 16px;background-size:16px 16px;}
.ch_refresh {background: url('images/refresh.png') no-repeat center center;background-size:16px 16px;}
.ch_register {background: url('images/register.png') no-repeat center center;background-size:16px 16px;}
.ch_reset {background: url('images/reset.png') no-repeat center center;background-size:16px 16px;}
.ch_role_author {background: url('images/role_author.png') no-repeat center center;background-size:16px 16px;}
.ch_see {background: url('images/see.png') no-repeat center center;background-size:16px 16px;}
.ch_service {background: url('images/service.png') no-repeat center center;background-size:16px 16px;}
.ch_show {background: url('images/show.png') no-repeat center center;background-size:16px 16px;}
.ch_sort {background: url('images/sort.png') no-repeat center center;background-size:16px 16px;}
.ch_spread {background: url('images/spread.png') no-repeat center center;background-size:16px 16px;}
.ch_staff_log {background: url('images/staff_log.png') no-repeat center center;background-size:16px 16px;}
.ch_staff_manage {background: url('images/staff_manage.png') no-repeat center center;background-size:16px 16px;}
.ch_staff {background: url('images/staff.png') no-repeat center center;background-size:16px 16px;}
.ch_things {background: url('images/things.png') no-repeat center center;background-size:16px 16px;}
.ch_trade {background: url('images/trade.png') no-repeat center center;background-size:16px 16px;}
.ch_upload_attach {background: url('images/upload_attach.png') no-repeat center center;background-size:16px 16px;}
.ch_upload_doc {background: url('images/upload_doc.png') no-repeat center center;background-size:16px 16px;}
.ch_settlement {background: url('images/settlement.png') no-repeat center center;background-size:16px 16px;}
.ch_wait_settlement {background: url('images/wait_settlement.png') no-repeat center center;background-size:16px 16px;}
.money_collect {background: url('images/money_collect.png') no-repeat center center;;background-size:16px 16px;}
.money_allot {background: url('images/money_allot.png') no-repeat center center;;background-size:16px 16px;}

.ch_check{background: url('images/check.png') no-repeat center center;;background-size:16px 16px;}
.ch_disable{background: url('images/disable.png') no-repeat center center;;background-size:16px 16px;}
.ch_grant{background: url('images/grant.png') no-repeat center center;;background-size:16px 16px;}