/****************************************
* Function to provide client validation for log in
*****************************************************/
function checkLoginDetails(){
  if (document.login_form.username.value == ""){
    alert("Please enter a Username");
    document.login_form.username.focus();
  }
  else if ( document.login_form.password.value == "" ) {
    alert("Please enter a Password");
    document.login_form.password.focus();
  }
  else{

    document.login_form.submit();
  }
}