if (nav == 'buyer'){
	var nav_btns = new Array('buyer_introduction', 'buyer_select', 'buyer_finance', 'buyer_find', 'buyer_offer', 'buyer_escrow', 'buyer_movein');
}
else{
	var nav_btns = new Array('seller_introduction', 'seller_select', 'seller_list', 'seller_market', 'seller_offer', 'seller_escrow', 'seller_sold');
}

function set_nav(active){
	for (i = 0; i < nav_btns.length; i++){
		var btn = $('btn_'+nav_btns[i]);
		if (nav_btns[i] != active){
			btn.removeClassName('on');
			btn.addClassName('off');
		}
		else{
			btn.removeClassName('off');
			btn.addClassName('on');
		}
	}
	
}

function get_content(section){
	set_nav(section);
	$('guide').innerHTML = '<img src="../common/images/loading.gif" alt="" width="300" height="80" border="0">';
	var pars = 'ajax=true';
	var url = section + '.php';
	var myAjax = new Ajax.Updater(
	'guide',
		url, 
		{
			method: 'get', 
			parameters: pars, 
			evalScripts: true
		});
}