function checkform(){
         
        var mail = document.getElementById("ename").value;
        var email = document.getElementById("UserName");
        var passwd=document.getElementById("passwd");
        if(passwd.value=="" || passwd.value == null){
		        passwd.focus();
		        return false;
	        }
             var pos=mail.indexOf("@");

	            if(pos == -1){
	            email.value = mail+"@zsemail.com";
    			        
	            }
	            else{
		            email.value = mail;
    		       
	            }
             if(document.getElementById("Remenber").checked)
             {
        	    setCookie("username",document.getElementById("ename").value,365);
        	    setCookie("password",document.getElementById("passwd").value,365);
            	
             }
             else
             {
                delCookie("username");
                delCookie("password");
             }
           return true;
        }
        function delCookie(name){ 
        var exp = new Date(); //当前时间 
        exp.setTime(exp.getTime() - 1); 
        var cval=getCookie2(name); 
        if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString(); 
        }
       function getCookie2(name){ 
            var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)")); 
            if(arr != null) 
            return unescape(arr[2]); 
            return null; 

            } 
 
        function getCookie(c_name)
        {
        if (document.cookie.length>0)
          {
          c_start=document.cookie.indexOf(c_name + "=");
          if (c_start!=-1)
            { 
            c_start=c_start + c_name.length+1 ;
            c_end=document.cookie.indexOf(";",c_start);
            if (c_end==-1) c_end=document.cookie.length;
            return unescape(document.cookie.substring(c_start,c_end));
            } 
          }
        return "";
        }

        function setCookie(c_name,value,expiredays)
        {
        var exdate=new Date();
        exdate.setDate(exdate.getDate()+expiredays);
        document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
        }

        function checkCookie()
        {
        var username=getCookie("username");
        var pwd=getCookie("password");
        if (username!=null && username!="" )
          {
             document.getElementById("ename").value=username;
             document.getElementById("passwd").value=pwd;
             document.getElementById("Remenber").checked=true;
          }
        else 
          {
           
             document.getElementById("ename").value="";
             document.getElementById("passwd").value="";
 
          }
        }