Event.observe( window, 'load', function() {
	//update keyword to match bottom keyword and change button
	$('keywords').value = $('bottom-keywords').value;
	checkKeyword();
	
	enableBottomSearchForm();
	
	$('bottom-keywords').observe('change', function() {
		enableBottomSearchForm();
	});
	
	$('bottom-keywords').observe('click', function() {
		if ( $('bottom-keywords').value == "You must enter a search term") {
			$('bottom-keywords').value = "";
		}
	});
});

function bottomKeywordWarning() {
	var bottomKeywordsContent = $('bottom-keywords').value;
	if(bottomKeywordsContent == "") {
		$('bottom-keywords').value="You must enter a search term";
		$('bottom-go-button').src='/graphics/search/disabled_button_search.gif';
		return false;
	} else if (bottomKeywordsContent == "You must enter a search term" ) {
		return false;
		$('bottom-go-button').src='/graphics/search/disabled_button_search.gif';
	} else {
		
	}
}

function enableBottomSearchForm() {
	if (($('bottom-keywords').value != "" ) && ( $('bottom-keywords').value != "You must enter a search term" )) {
		$('bottom-go-button').src='/sf_modules/enceladus/graphics/gobutton_black.gif';
	} else {
		$('bottom-go-button').src='/sf_modules/enceladus/graphics/gobutton_black.gif';
	}
}