document.write('<div class="con" id="login_null" ><form action="http://u.maicai.cn/?action=login" method="POST" name="login_form"  autocomplete="off"><ul><li><span>用户名：</span><span><input type="text" id="username" maxlength="15" value="" name="username" style="width:110px;"/></span></li><li><span>密　码：</span><span><input type="password" id="password" name="password" style="width:110px;" /></span></li><li><span>验证码：</span><span><input type="text" style="width:36px;height:16px;" maxlength="4" name="valid" id="valid"/></span> <span style="height:18px;cursor:pointer;"><img src="http://u.maicai.cn/js/valid.php" width="50" height="25" align="absmiddle" id="verifimg" /></span></li></ul><div class="logon"><div class="logbtn"><input type="hidden" name="reffer" id="reffer"/><input id="login" name="login" type="button" value="登 录" style="cursor:pointer;" /></div></div><div class="link"><div class="logtxt"><a href="http://u.maicai.cn/page/passwordget.html">忘记密码？</a></div><div class="logreg"><a href="http://u.maicai.cn/register.php">免费注册</a></div></div></form></div>');
$(document).ready(function(){
	reffer=location.href;
	$("#loginout").attr('href','http://u.maicai.cn/?action=logout&reffer='+reffer);
	$("#verifimg").click(function(){
			checkverifimg();
		});
	$(document).keydown(function(event){
			if(event.keyCode==13)
				$("#login").click();
		});
	$("#login").click(function(){
		var name=$("#username").val();
		var pass=$("#password").val();
		var valid=$("#valid").val();
		name=$.trim(name);
		pass=$.trim(pass);
		valid=$.trim(valid);
		if (name.length<2){
			alert("用户名不能为空或少于三位");
			checkverifimg();
			return;
		}
		if (pass.length<3){
			alert("密码不能为空或少于三位");
			checkverifimg();
			return;
		}
		if(valid.length==0||valid==''){
			alert("验证码不能为空");
			checkverifimg();
			return;
		}			
		$("#reffer").val(location.href);	
		$("#login").attr('disabled','disabled');	
$.getJSON("http://u.maicai.cn/myajax.php?action=login&callback=?",{UserName:name,UserPass:pass,valid:valid},function(json){
  			if(json == 1){
  				document.login_form.submit();
  			}else{
				checkverifimg();
				$("#login").attr('disabled','');
				alert(json);
  			}
  			
		}); 
	});
});

	function checkverifimg(){
		var timenow = new Date().getTime();
			url="http://u.maicai.cn/js/valid.php";
			id = url.indexOf('?');
			if(id >= 0  ){
				if(id == (url.length-1))
					url = url +"t="+ timenow;
				else 
					url = url +"&t="+ timenow;
			}else{
				url = url +"?t="+ timenow;
			}
			document.getElementById("verifimg").src=url;
	}