diff --git a/upload/source/admincp/admincp_setting.php b/upload/source/admincp/admincp_setting.php
index 03e43852f85ef70eb8f8789ac87d8114a2d04cd2..b2947217ac984019131b3cd8a8d0822167f41b56 100644
--- a/upload/source/admincp/admincp_setting.php
+++ b/upload/source/admincp/admincp_setting.php
@@ -630,6 +630,7 @@ if(!submitcheck('settingsubmit')) {
 		showsetting('setting_styles_viewthread_starthreshold', 'settingnew[starthreshold]', $setting['starthreshold'], 'text');
 		showsetting('setting_styles_viewthread_maxsigrows', 'settingnew[maxsigrows]', $setting['maxsigrows'], 'text');
 		showsetting('setting_styles_viewthread_sigviewcond', 'settingnew[sigviewcond]', $setting['sigviewcond'], 'text');
+		showsetting('setting_styles_viewthread_sigimgclick_on', 'settingnew[sigimgclick]', $setting['sigimgclick'], 'radio');
 		showsetting('setting_styles_viewthread_rate_on', 'settingnew[ratelogon]', $setting['ratelogon'], 'radio');
 		showsetting('setting_styles_viewthread_rate_number', 'settingnew[ratelogrecord]', $setting['ratelogrecord'], 'text');
 		showsetting('setting_styles_viewthread_collection_number', 'settingnew[collectionnum]', $setting['collectionnum'], 'text');
diff --git a/upload/source/language/lang_admincp.php b/upload/source/language/lang_admincp.php
index 71f886758f9f72b8964a7b39f50ab19be28658e0..ef89737cfe4fb00d3d1c223d4a671bb139dc4c2f 100644
--- a/upload/source/language/lang_admincp.php
+++ b/upload/source/language/lang_admincp.php
@@ -1040,6 +1040,7 @@ $lang = array
 	'setting_styles_viewthread_maxsigrows' => '签名最大高度(px)',
 	'setting_styles_viewthread_maxsigrows_comment' => '设置帖子中允许显示签名的最大高度',
 	'setting_styles_viewthread_sigviewcond' => '签名显示条件',
+	'setting_styles_viewthread_sigimgclick_on' => '取消签名图片的动态放大功能',
 	'setting_styles_viewthread_sigviewcond_comment' => '只有帖子字数大于指定数值后才显示签名，0为不限制',
 	'setting_styles_viewthread_author_onleft' => '作者用户名显示位置',
 	'setting_styles_viewthread_author_onleft_comment' => '显示位置并不会影响论坛的性能和美观，请根据您会员的浏览习惯进行选择',
diff --git a/upload/template/default/forum/viewthread_node.htm b/upload/template/default/forum/viewthread_node.htm
index 68d18c2640b48217177089a0bb624607d9710a65..b7974f1b3301a2cb3aad8fb4964d4d472bf00b55 100644
--- a/upload/template/default/forum/viewthread_node.htm
+++ b/upload/template/default/forum/viewthread_node.htm
@@ -360,7 +360,7 @@ $postshowavatars = !($_G['setting']['bannedmessages'] & 2 && ($post['memberstatu
 		<!--{if $post['signature'] && ($_G['setting']['bannedmessages'] & 4 && ($post['memberstatus'] == '-1' || ($post['authorid'] && !$post['username']) || ($post['groupid'] == 4 || $post['groupid'] == 5) || ($post['status'] & 1)))}-->
 			<div class="sign">{lang member_signature_banned}</div>
 		<!--{elseif $post['signature'] && !$post['anonymous'] && $showsignatures}-->
-			<div class="sign" style="max-height:{$_G['setting']['maxsigrows']}px;maxHeightIE:{$_G['setting']['maxsigrows']}px;">$post[signature]</div>
+			<div class="sign" style="max-height:{$_G['setting']['maxsigrows']}px;maxHeightIE:{$_G['setting']['maxsigrows']}px;">{if $_G['setting']['sigimgclick']}{eval $post[signature] = str_replace('onclick="zoom(this, this.src, 0, 0, 0)"', '', $post[signature]);}{/if}$post[signature]</div>
 		<!--{elseif !$post['anonymous'] && $showsignatures && $_G['setting']['globalsightml']}-->
 			<div class="sign">$_G['setting']['globalsightml']</div>
 		<!--{/if}-->