function _login(arr){
	var str_success_html = '<table width="86%" border="0" cellspacing="0" cellpadding="0">';
			str_success_html += '<tr>';
	      	str_success_html += '<td class="fond12B" height="100"><a href="http://bbs.ifeng.com/fhbbs/forumdisplay.php?fid=329" title="进入奥运论坛" target="_blank">欢迎您：'+ arr[0] +' 欢迎加入凤凰奥运记者团</td>';
          	str_success_html += '</tr>';
			str_success_html += '</table>';
		top.document.getElementById("login_box").innerHTML = str_success_html;
	}
function _logout(){	
	var str_out_html = '<form name="login" id="login" action="http://torch.ifeng.com/login.php" target="loginfrm" method="POST" enctype="multipart/form-data">';
		  str_out_html += '<input type="hidden" name="action" value="login"/>';
	      str_out_html += '<table width="86%" border="0" cellspacing="0" cellpadding="0">';
	      str_out_html += '<tr>';
	      str_out_html += '<td width="33%" height="45" class="fond12B">用户名：</td>';
          str_out_html += '<td width="67%"><input type="text" name="username" id="username" class="pastwordForm" /></td>';
          str_out_html += '</tr>';
          str_out_html += '<tr>';
          str_out_html += '<td height="45" class="fond12B">密 码：</td>';
          str_out_html += '<td><input type="password" name="password" id="password" class="pastwordForm" /></td>';
          str_out_html += '</tr>';
          str_out_html += '<tr>';
          str_out_html += '<td align="center" colspan="2">';
		  str_out_html += '<input type="submit" name="login_button" value="登录" />&nbsp;&nbsp;';
          str_out_html += '<input type="submit" name="reg_button" value="注册" onclick="javascript:window.open(\'http://sso.ifeng.com/usr/register.jsp\');"/>';
		  str_out_html += '</td>';
          str_out_html += '</tr>';     
          str_out_html += '</table>';
	      str_out_html += '</form>';   
		top.document.getElementById("login_box").innerHTML = str_out_html;
	}
				top._logout();