function login(){
		var userName = document.getElementById("userName").value.replace(/^\s+|\s+$/g,"");
		var password = document.getElementById("password").value.replace(/^\s+|\s+$/g,"");
		var validationCode = document.getElementById("validate").value.replace(/^\s+|\s+$/g,"");
			if(validation(userName, password, validationCode)){
				if(checkSpecificKey(userName)){
					
					var key = CryptoJS.enc.Utf8.parse(validationCode+validationCode+validationCode.substring(0,4));
		            var passwordjm = CryptoJS.enc.Utf8.parse(password);
		            var encrypted = CryptoJS.AES.encrypt(passwordjm, key, {mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7});
		            password = encrypted.toString();
					
					jQuery.ajax({
					url:contextPath+"/portal/login.do",
					contentType:"application/json",
					data:JSON.stringify({"validationCode":validationCode,"userName":userName,"password":password}),
					type:"post",
					dataType:"json",
					success:function(ret){
						if(ret.verification === "true"){
							if(ret.status=="1"){
								window.parent.parent.location.replace(ret.redictPagePath);
							}else if(ret.status=="2"){
								window.location.href=encodeURI(ret.redictPagePath+"?validationInfo="+ret.exception+"&userName="+userName+"&password="+password);
								window.event.returnValue = false;                        
						        if (window.event.preventDefault) window.event.preventDefault();
							}else if(ret.status=="3"){
								window.location.href=encodeURI(ret.redictPagePath+"?validationInfo="+ret.exception+"&userName="+userName+"&password="+password);
								window.event.returnValue = false;                        
						        if (window.event.preventDefault) window.event.preventDefault();
							}else{
								window.location.href=encodeURI(ret.redictPagePath+"?exception="+HTMLEncode(ret.exception));
								window.event.returnValue = false;                        
						        if (window.event.preventDefault) window.event.preventDefault();
							}
						}else if(ret.verification === "overtime") {
							document.getElementById( "sp" ).innerHTML = "验证码失效，请重新输入验证码！";
							document.getElementById( "sp" ).style.display = "inline"; 
							updateValidationCode();
						}else if(ret.verification === "sysErr") {
							window.location.href=encodeURI(ret.redictPagePath+"?validationInfo=请正确输入账号信息");
							window.event.returnValue = false;                        
					        if (window.event.preventDefault) window.event.preventDefault();
						}else {
							document.getElementById( "sp" ).innerHTML = "验证输入错误！";
							document.getElementById( "sp" ).style.display = "inline"; 
							updateValidationCode();
						}
					},
					error:function(exception){
						
					}
				});
			}
		}
	}
 
 function validation(userName,password,validationCode){
		if(!userName){
			alert("用户名不能为空(please input your userName)!");
			return false;
		}
		if(!password){
			alert("密码不能为空(please input your password)!");
			return false;
		}
		if(!validationCode){
			//@REVIEW 修改提示显示方式 与“验证码”错误相同 by lihui@primeton.com
			document.getElementById( "sp" ).innerHTML = "验证码不能为空!";
			document.getElementById( "sp" ).style.display = "inline"; 
//    			alert("验证码不能为空(please input your validationCode)!");
    			return false;
    		}
    		return true;
    	}
     
   //点击图片更换验证码
 function updateValidationCode() {
	 jQuery("#validationCode").attr("src",contextPath+"/validata/images?data="+new Date().getTime());
 }
   
 function checkSpecificKey(e) {
 	if (null == e || '' == e || undefined == e) {
 		return;
 	}
     var specialKey =new RegExp("[~'!#@$%^&*()-+_=:<>]");
     var realkey = e;
     	if (specialKey.test(realkey)) {
             alert('请勿输入特殊字符: ' + realkey);
             return false;
         }
     return true;
 }