<script language="javascript">var goto_top_type = ;var goto_top_itv = ;function goto_top_timer() {var y = goto_top_type == ? documentdocumentElementscrollTop: documentbodyscrollTop;var moveby = ;y = Mathceil(y * moveby / );if (y < ) {y = ;}if (goto_top_type == ) {documentdocumentElementscrollTop = y;} else {documentbodyscrollTop = y;}if (y == ) {clearInterval(goto_top_itv);goto_top_itv = ;}}function goto_top() {if (goto_top_itv == ) {if (documentdocumentElement && documentdocumentElementscrollTop) {goto_top_type = ;} else if (documentbody && documentbodyscrollTop) {goto_top_type = ;} else {goto_top_type = ;}if (goto_top_type > ) {goto_top_itv = setInterval(goto_top_timer() );}}}</script><a href="javascript:void()" onclick="goto_top()">【返回顶部】</a>
