/*preload nav bg hover image*/
var pic1= new Image(783, 34); 
pic1.src="/img/nav/header_nav/header_search_hover_bg.gif"; 


$j(document).ready(function(){
	addSearchInputListeners();
	addSearchButtonListeners();
});

function searchArchive(){
	searchText = $j('#header_search_input').val();
	searchText = searchText.replace(/^\s*|\s*$/,"");
	if(searchText != '' && searchText != 'Search The Archive'){
		showLoader();
		$j('#headerSearchForm').submit();
	}
}

function addSearchInputListeners(){
	$j('#header_search_input').focus(function(event){
						   if($j(this).val() == 'Search The Archive'){
							   $j(this).val('');
						}
					});
	$j('#header_search_input').blur(function(event){
						searchText = $j(this).val();
						testText = searchText.replace(/^\s*|\s*$/,"");
						if(testText == ''){
							   $j(this).val('Search The Archive');
						}
					});
}

function addSearchButtonListeners(){
	$j('#header_search_link').mouseover(function(event){
						  $j('#header_nav').css({'background-image' : 'url(/img/nav/header_nav/header_search_hover_bg.gif)'});
					});
	
	$j('#header_search_link').mouseout(function(event){
						   $j('#header_nav').css({'background-image' : 'url(/img/nav/header_nav/header_search_bg.gif)'});
					});
}