function pop(url) {
  link = window.open(url,"pop","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=600,height=450,left=25,top=25");
}
function media(url) {
  link = window.open(url,"media","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=670,height=465,left=25,top=25");
}
function history(url) {
  link = window.open(url,"pophistory","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=750,height=480,left=25,top=25");
}

function signin_Validator(theForm)
{

  if (theForm.username.value == "")
  {
    alert("Please enter your Username.");
    theForm.username.focus();
    return (false);
  }

  if (theForm.password.value == "")
  {
    alert("Please enter your Password.");
    theForm.password.focus();
    return (false);
  }

  return (true);
}