title: hide asp label text before submitting on server
body: <p>The problem looks very simple but it giving me pain
  i am making  a login page manually which checks for user email and password from linq. on login page there is an asp label which shows the error msg based on query result like "user not exist" or "user is inactive" etc. there are asp required field validators on both text boxes.
  the problem is if user first attempt get unsuccessful and message get displayed on lable, it do't go away unless user get successfully loged in. i want the text back as lable1.text="" on submit button but it can't as its a server side control and the text box validators do't let it go if empty. do i have to use java script?</p>