function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}

// open new window
function popUp (url, name) {
    var popupWin = window.open(url, name,  'scrollbars=1,resizable=1,status=0,location=0,toolbar=0,width=600,height=150,left=1,top=1');
}

function concatValue() {
    document.Form.search_str.value = "*" + document.Form.search_str.value + "*";
}