// sh_logo
var elem_sh_logo = document.getElementById('sh_logo');

if (elem_sh_logo) {
	function event_sh_logo_onclick(evt) {
		window.location="/index.htm";
    }
	
	elem_sh_logo.onclick = event_sh_logo_onclick;
	if (elem_sh_logo.captureEvents) elem_sh_logo.captureEvents(Event.ONKEYDOWN);
}

// signin button
if ($('btn_signIn')) {
	$('btn_signIn').observe('mouseover', function() {
		$('btn_signIn').src = '/resources/images/signin_on.gif';
	});
	
	$('btn_signIn').observe('mouseout', function() {
		$('btn_signIn').src = '/resources/images/signin.gif';
	});
}

// signout button
if ($('btn_signOut')) {
	$('btn_signOut').observe('mouseover', function() {
		$('btn_signOut').src = '/resources/images/signout_on.gif';
	});

	$('btn_signOut').observe('mouseout', function() {
		$('btn_signOut').src = '/resources/images/signout.gif';
	});
}