var ids = Array();
ids = ['officesuites', 'virtualadvantage', 'meetingrooms', 'none', 'none', 'contactus'];

function show(obj, id) {
	hideAll();
	if(id!='none') {
		el = $(id);
		if(el.style.display!='block') {
			el.style.display='block';
		}
		obj.className += ' active';
	}

}
function hideAll() {
	for(i=0; i<ids.length; i++) {
		if(ids[i]!='none') {
		var el = $(ids[i]);
			if(el.style.display!='none') {
				el.style.display='none';
			}
		}
	}
	
	var nav = $('top-nav');
	var anch = nav.getElementsByTagName('a');
	for(var i=0; i<anch.length; i++) {
		anch[i].className=anch[i].className.replace(/active/gi, '');
	}
}

function callMenu() {
	var n = document.getElementById('top-nav');
	var a = n.getElementsByTagName('a');
	for(var i=0; i<a.length; i++) {
		a[i].i = i;
		a[i].onmouseover = function() {
			show(this, ids[this.i]);
		}
	}
}
function bHideAll(event) {
	var htop = 190;
	var hbot = 420;
	var st = Math.max(document.body.scrollTop,document.documentElement.scrollTop);
	if ( (event.clientY+st)>420 || (event.clientY+st)<190){
		hideAll();
	}
}