var abiertos=Array();
function flip_menu(obj, opc){
  if (document.getElementById(obj))
  {
    var estado = document.getElementById(obj).style.display;
    if (estado=='block')
    {
      document.getElementById(obj).style.display='none';
    }else
    {
      document.getElementById(obj).style.display='block';
    }
  }
}


function CheckVariation()
{
  var selection=document.Variation.elements['Item_1_OfferListingId'].selectedIndex;
  if (selection=="-1")
  {
    alert('You must make a selection');
    document.Variation.elements['Item_1_OfferListingId'].focus();
    return false;
  }
  return true;
}