function copyright(){
document.write('<style>'
+'.cr_float{ width:100%; float:left;position:relative; }'
+'.crbg{ width:100%; height:90px; float:left; position:absolute; z-index:1;}'
+'.cr960{ width:960px; margin:0 auto; padding-top:12px;}'
+'.crbg_logo{width:224px; height:80px; float:left;  margin-left:160px; _margin-left:80px; margin-top:0px;}'
+'.crbg_text{ width:456px; font-size:12px; color:#6d6d6d; line-height:18px; float:left; text-align:left; margin-top:4px;}'
+'.cr_alpha{ width:100%; height:100px; float:left; background:url(http://sf.gtgame.com.cn/promotion/public/images/sf_copy_bg.png) 0 0 repeat-x; position:absolute; z-index:0; }'
+'#gotopbtn {width:32px;height:31px;position:fixed;_position:absolute;bottom:0px;_bottom:-6px;right:15%;display:none;cursor:pointer;background:url(http://sf.gtgame.com.cn/promotion/public/images/top.png) 0 0 no-repeat; text-indent:-999em;}'
+'</style>')
document.write('<div class="cr_float">'
+'<div class="crbg">'
+'<div class="cr960">'
+'<div id="gotopbtn">返回顶部</div>'
+'<div class="crbg_logo"><a href="http://www.cdcgames.net" target="_blank"><img src="http://sf.gtgame.com.cn/promotion/public/images/sf_copyright_logo.png" /></a></div>'
+'<div class="crbg_text">CDC Games 版权所有并保留对本网站内容的更正及解释权利<br />'
+'《网络文化经营许可证》文网文[2008]122号 　京ICP证040455号<br />'
+'中华人民共和国增值电信业务经营许可证 批准文号: 新出音管(2007)307号<br />'
+'出版号: ISBN 978-7-89487-122-0号  合同登记号: 电出字01-2006-0133号</div>'
+'</div>'
+'</div>'
+'<div class="cr_alpha"></div>'
+'<div style="clear:both;">&nbsp;</div>'
+'</div>'
)
backTop=function (btnId){
	var btn=document.getElementById(btnId);
	var d=document.documentElement;
	window.onscroll=set;
	btn.onclick=function (){
		btn.style.display="none";
		window.onscroll=null;
		this.timer=setInterval(function(){
			d.scrollTop-=Math.ceil(d.scrollTop*0.1);
			if(d.scrollTop==0) clearInterval(btn.timer,window.onscroll=set);
		},10);
	};
	function set(){btn.style.display=d.scrollTop?'block':"none"}
};
backTop('gotopbtn');
}