function entsub(event,ourform) {
  if (event && event.which == 13) {
    document.getElementById("ContentPlaceHolderDefault_MainLayoutContentPlaceHolder_umbLoginMembership_4_Login1_LoginButton").click();
     return false;
  }
  else if (window.event && window.event.keyCode == 13) {
    document.getElementById("ContentPlaceHolderDefault_MainLayoutContentPlaceHolder_umbLoginMembership_4_Login1_LoginButton").click();
     return false;
  }
  else
  {
    return true;
  }
}