function checklogin() {
 
  username = document.userlogin.username.value;
  password = document.userlogin.password.value;

  
 returnval = true;
 hideAllErrors();
 if (username == "") {
 returnval = false;
 document.getElementById("usernameError").style.display = "inline";
  } 
 if (password == "") {
 returnval = false;
 document.getElementById("passwordError").style.display = "inline";
  }
 return returnval;
}
 
function hideAllErrors() {
document.getElementById("usernameError").style.display = "none"
document.getElementById("passwordError").style.display = "none"
}

function checkadminlogin() {
 
  username = document.adminlogin.adminusername.value;
  password = document.adminlogin.adminpassword.value;

  
 returnval = true;
 hideAllErrors();
 if (username == "") {
 returnval = false;
 document.getElementById("usernameError").style.display = "inline";
  } 
 if (password == "") {
 returnval = false;
 document.getElementById("passwordError").style.display = "inline";
  }
 return returnval;
}
 
function hideAllErrors() {
document.getElementById("usernameError").style.display = "none"
document.getElementById("passwordError").style.display = "none"
}