/**
 * These functions enable the hover behavior over the link bar buttons.
 */

function onLinkBarButtonOver(tableCell) {
  tableCell.style.backgroundImage = "URL('/images/back_button_on.png')";
  tableCell.style.color = "#797979";
}

function onLinkBarButtonOut(tableCell) {
  tableCell.style.backgroundImage = "URL('/images/back_button.png')";
  tableCell.style.color = "#969696";
}


/**
 * These functions enable the hover behavior over the search button.
 */

function onSearchButtonOver(img) {
  img.src = "/images/search_button_on2.png";
}

function onSearchButtonOut(img) {
  img.src = "/images/search_button2.png";
}
function clickclear(thisfield, defaulttext) {
if (thisfield.value == defaulttext) {
thisfield.value = "";
}
}

function clickrecall(thisfield, defaulttext) {
if (thisfield.value == "") {
thisfield.value = defaulttext;
}
}

function showhide() {
  var hidden_div = document.getElementById("div_search");
  if (hidden_div ) {
    if (hidden_div .className == 'hidden') {
      hidden_div .className  = 'shown';
    }
    else {
      hidden_div .className  = 'hidden';
    }
  }
}