var menuNames = ["company", "industries", "performance", "services", "cleaning_solutions", "custom_blending", "bulk_delivery", "chemicals", "consulting", "case_histories", "contact_us"];

function showMenu (menuName) {
	hideAllMenus();
	xShow( menuName + "_subnav" );
}

function hideMenu (menuName) {
	xHide( menuName + "_subnav" );
}

function hideAllMenus () {
	var m = menuNames.length;
	for (var i = 0; i <= m; i++) {
		hideMenu( menuNames[i] );
	}
}

function setSelectedNav (name) {
	var anc = xGetElementById( name + "_nav" );
	anc.style.backgroundImage = "url('/images/nav_sel.gif')";
	anc.style.backgroundPosition = "bottom center";
	anc.style.backgroundRepeat = "no-repeat";
	showMenu( name );
}