function header_nav_top_firm() {
	header_nav_top_onmouseover('header_nav_top_firm', 'header_nav_bottom_firm');
	header_nav_top_onmouseout('header_nav_top_portfolio', 'header_nav_bottom_portfolio');
	header_nav_top_onmouseout('header_nav_top_contact', 'header_nav_bottom_contact');
}

function header_nav_top_portfolio() {
	header_nav_top_onmouseout('header_nav_top_firm', 'header_nav_bottom_firm');
	header_nav_top_onmouseover('header_nav_top_portfolio', 'header_nav_bottom_portfolio');
	header_nav_top_onmouseout('header_nav_top_contact', 'header_nav_bottom_contact');
}

function header_nav_top_contact() {
	header_nav_top_onmouseout('header_nav_top_firm', 'header_nav_bottom_firm');
	header_nav_top_onmouseout('header_nav_top_portfolio', 'header_nav_bottom_portfolio');
	header_nav_top_onmouseover('header_nav_top_contact', 'header_nav_bottom_contact');
}

function header_nav_top_onmouseover(elementTopID, elementBottomID) {
	document.getElementById(elementTopID).style.backgroundColor = '#B8210C';
	document.getElementById(elementTopID).style.borderBottom = '1px solid #B8210C';
	document.getElementById(elementTopID).style.borderLeft = '1px solid #B8210C';
	document.getElementById(elementTopID).style.paddingLeft = '0px';
	document.getElementById(elementTopID).style.borderRight = '1px solid #B8210C';
	document.getElementById(elementTopID).style.paddingRight = '0px';
	if (elementBottomID != 'header_nav_bottom_portfolio')
		document.getElementById(elementBottomID).style.display = 'block';
}

function header_nav_top_onmouseout(elementTopID, elementBottomID) {
	document.getElementById(elementTopID).style.backgroundColor = '#000000';
	document.getElementById(elementTopID).style.borderBottom = '1px solid #B8210C';
	document.getElementById(elementTopID).style.borderLeft = '0px';
	document.getElementById(elementTopID).style.paddingLeft = '1px';
	document.getElementById(elementTopID).style.borderRight = '0px';
	document.getElementById(elementTopID).style.paddingRight = '1px';
	document.getElementById(elementBottomID).style.display = 'none';
}

function portfolio_shownav() {
	document.getElementById('header_nav_top_portfolio').onmouseover = header_nav_top_portfolio_onmouseover;
	header_nav_top_portfolio_onmouseover();
}

function header_nav_top_portfolio_onmouseover() {
	header_nav_top_onmouseout('header_nav_top_firm', 'header_nav_bottom_firm');
	header_nav_top_onmouseout('header_nav_top_contact', 'header_nav_bottom_contact');
	document.getElementById('header_nav_top_portfolio').style.backgroundColor = '#B8210C';
	document.getElementById('header_nav_top_portfolio').style.borderBottom = '1px solid #B8210C';
	document.getElementById('header_nav_top_portfolio').style.borderLeft = '1px solid #B8210C';
	document.getElementById('header_nav_top_portfolio').style.paddingLeft = '0px';
	document.getElementById('header_nav_top_portfolio').style.borderRight = '1px solid #B8210C';
	document.getElementById('header_nav_top_portfolio').style.paddingRight = '0px';
	document.getElementById('header_nav_bottom_portfolio').style.display = 'block';
}