function validateLogin(email,erremail,emailformatError,pwd,errpwd,errDiv)
{
    var error,flag=false;
    var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
    error= "<ul>";                        
    if(isEmpty(email))
        {
            error=error+'<li>'+erremail +'</li>';
            flag =true;
            email.focus();
        }
    else if((reg.test(email.value)==false))
        { 
            error=error+'<li>'+emailformatError+'</li>';
            email.focus();
            flag =true;            
         }
    if(isEmpty(pwd))
        {
           error=error+'<li>'+errpwd +'</li>';
           if(flag == false)
           pwd.focus();
           flag =true;
          }
    error =error +"</ul>";
     if(flag==true)
         {
            errDiv.innerHTML = error;
            return false;
         }
         return true;
}
    
function isEmpty(mytext) 
{
    var re = /^\s{1,}$/g; //match any white space including space, tab, form-feed, etc. 
    if ((mytext.value.length==0) || (mytext.value==null) || ((mytext.value.search(re)) > -1)) 
    {
        return true;
    }
    else 
    {
        return false;
    }
}