function focusNav(show)  {
  //hide navs
  changeNav("subnav1", 0);
  changeNav("subnav2", 0);
  changeNav("subnav3", 0);
  changeNav("subnav4", 0);
  changeNav("subnav5", 0);
  changeNav("subnav6", 0);
  changeNav("subnav7", 0);

  //show nav
   changeNav("subnav"+show, 1);
}

function changeNav(nav, show)  {
  var e = document.getElementById(nav);

  if(show == 1)  {
    e.className = "";
  }
  else  {
    e.className = "hide";
  }
}

function adjustIE()  {
  if(isIE())  {
    var e = document.getElementById("maincontainer");
    e.className = "iemaincontainer";
  }
}

function isIE() {
  return /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent);
 }

var useSearchKeyword = false;

function onSearchSetFocus()
{
	var searchField = document.getElementById('global-search-field');
	searchField.style.color = 'black';

	if(searchField.value == 'Search')
	{
		searchField.value = '';
	}

	useSearchKeyword = true;
}

function onSearchLostFocus()
{
	var searchField = document.getElementById('global-search-field');
	if(searchField.value == '')
	{
		searchField.style.color = 'gray';
		searchField.value = 'Search';
		useSearchKeyword = false;
	}
}

function setSearchString()
{
	if(useSearchKeyword == false)
	{
		var searchField = document.getElementById('global-search-field');
		searchField.value = '';
	}
}