function seereg(){
	document.getElementById('sreg-btn').style.display='';
	document.getElementById('search-region').style.display='';
	document.getElementById('sby3').style.display='none';

	document.getElementById('sby-btn').style.display='none';
	document.getElementById('search-by').style.display='none';
}

function seesearch(){
	document.getElementById('sby-btn').style.display='block';
	document.getElementById('search-by').style.display='block';
	document.getElementById('sby3').style.display='block';
	
	document.getElementById('sreg-btn').style.display='none';
	document.getElementById('search-region').style.display='none';
}
function seeadv(){
	if(document.getElementById('adv1').style.display=='none')
		document.getElementById('adv1').style.display='block';
	else
		document.getElementById('adv1').style.display='none';
}