function show_over1(region){
    document.getElementById('header_content1').style.display = 'block';
	document.getElementById('reg_content4').style.display = 'none';
	document.getElementById("link_" + 'reg_content4').className = '';
	document.getElementById('reg_content5').style.display = 'none';
	document.getElementById("link_" + 'reg_content5').className = '';
	document.getElementById('reg_content6').style.display = 'none';
	document.getElementById("link_" + 'reg_content6').className = '';
	document.getElementById('header_content1').style.display = 'none';
	document.getElementById(region).style.display = 'block';
	document.getElementById("link_" + region).className = 'selected';
}
//function show_out(region){
//	document.getElementById('header_content1').style.display = 'block';
//	document.getElementById(region).style.display = 'none';
//	document.getElementById("link_" + region).className = '';
//}