function show_exact() {
	document.getElementById('flex_box').style.display = 'none';
	document.getElementById('start_date').value = '';
	document.getElementById('end_date').value = '';
	document.getElementById('exact_box').style.display = 'block';
}
function show_flex() {
	document.getElementById('exact_box').style.display = 'none';
	document.getElementById('exact_date').value = '';
	document.getElementById('flex_box').style.display = 'block';
}

function show_co() {
	document.getElementById('ci_search').style.display = 'none';
	document.getElementById('co_search').style.display = 'block';
}
function show_ci() {
	document.getElementById('co_search').style.display = 'none';
	document.getElementById('ci_search').style.display = 'block';
}
function close_asearch() {

	document.getElementById('advanced_search').style.display = 'none';	
}
function open_asearch() {

	document.getElementById('advanced_search').style.display = 'block';	
}