function checkLogin()
		  {
			if(myform.u_name.value=="")
			{
				alert("用户名不能为空！");
				myform.u_name.focus();
				return false;
			}
			if(myform.u_password.value=="")
			{
				alert("密码不能为空！");
				myform.u_password.focus();
				return false;
			}
		  }
		document.writeln("     <form name=\'myform\' action=\'/chklogin.asp\' method=\'post\' onSubmit=\'return checkLogin()\'>");
		document.writeln("          用户名:");
		document.writeln("            <input name=\'u_name\' type=\'text\' class=\'login-input\' value=\'\'/>");
		document.writeln("        密　码:");
		document.writeln("            <input name=\'u_password\' type=\'password\' class=\'login-input\'  />");
		document.writeln("			<input type=\'submit\' name=\'imageField\' value=\'登录\' class=\'login-btn common-btn \' />");
		document.writeln("        <a href=\'/reg\' class=\'mr-10 header-reg\'>注册</a> <a href=\'/reg/forget.asp\' class=\'mr-10 header-reg\'>忘记密码?</a>");
		document.writeln("        </form>");