function goBack(){
  if (history.length > 0){
  	history.back()
  }
}

function bk1Search(){
  var oForm=document.all ? oBk1SearchForm : document.bk1SearchForm
  var oItemType=oForm.ItemType
  var selected=oItemType.options[oItemType.selectedIndex]
  oForm[ selected.value ].value=oForm.ItemString.value
  return true
}