function checkLogin(){
	with(document.form1){
		var ret=true;
		if(username.value==""){
			alert("用户名不能空为!");
			username.focus();
			username.select();
			ret=false;
		}
		else if(userpass.value==""){
			alert("密码不能空为!");
			userpass.focus();
			userpass.select();
			ret=false;
		}		
		else if(checkcode.value==""){
			alert("验证码不能空为!");
			checkcode.focus();
			checkcode.select();
			ret=false;
		}
		if(ret==true){
			document.form1.submit();
		}
	}
}
function showLoginCheckCode(){
	var codepath=document.getElementById('checkcode_img').src;
	if(codepath.indexOf('blank.gif')!=-1){
      document.getElementById('checkcode_img').src='/image.asp';
    } 	
}
document.writeln("<form id=\"form1\" name=\"form1\" method=\"post\" action=\"\/login.asp?act=do\">");
document.writeln("用户名：<input name=\"username\" type=\"text\" class=\"input_border\" id=\"username\" size=\"10\" maxlength=\"50\" onFocus=\"showLoginCheckCode()\" \/>");
document.writeln("密码：<input name=\"userpass\" type=\"password\" class=\"input_border\" id=\"userpass\" size=\"10\" maxlength=\"50\" onFocus=\"showLoginCheckCode()\" \/>");
document.writeln("<input name=\"flag\" type=\"radio\" value=\"0\" checked=\"checked\" \/>个人");
document.writeln("<input name=\"flag\" type=\"radio\" value=\"1\" \/>俱乐部");
document.writeln("<input name=\"checkcode\" type=\"text\" class=\"input_border\" id=\"checkcode\" size=\"6\" \/>");
document.writeln("<img id=\"checkcode_img\" src=\"\/images\/blank.gif\" height=\"12\" align=\"absmiddle\" \/>");
document.writeln("<input type=\"hidden\" name=\"expire\" value=\"1\" \/>");
document.writeln("<img src=\"\/images\/login.gif\" alt=\"登录\" width=\"38\" height=\"17\" align=\"absmiddle\" onClick=\"checkLogin()\" style=\"cursor:hand;\" \/>");
document.writeln("<a href=\"\/reg.asp\" target=\"_blank\"><img src=\"\/images\/register.gif\" alt=\"注册\" width=\"35\" height=\"17\" border=\"0\" align=\"absmiddle\" \/><\/a> &nbsp;&nbsp;<a href=\"help\/\" target=\"_blank\"><img src=\"\/images\/help.gif\" alt=\"帮助\" width=\"38\" height=\"17\" border=\"0\" align=\"absmiddle\" \/><\/a>");
document.writeln("    <\/form>");