function hideLogin() {
	var loginForm = document.getElementById('top_login');
	var mainArea = document.getElementById('main_wrapper');
	loginForm.style.visibility = 'hidden';
	mainArea.style.paddingTop = '5px';
}

function loginBar() {
	var loginArea = document.getElementById('top_login');
	var loginButton = document.getElementById('login_button');
	if(loginArea.style.visibility == 'hidden') {
		loginArea.style.visibility = 'visible';
		loginButton.style.backgroundImage = 'url(http://www.runningthequadcities.com/images/nav_login_over.gif)';
	} else {
		loginArea.style.visibility = 'hidden';
		loginButton.style.backgroundImage = 'url(http://www.runningthequadcities.com/images/nav_login_out.gif)';
	}
}

function loginMargin() {
	var mainBody = document.getElementById('main_body');
	mainBody.style.marginTop = '140px';
}