function pi() {
	var oi = new Array('about','buyers','sellers','contact');
	if (document.images) {
		for (var i = 0; i < oi.length; i++) {
			(new Image()).src = '/images/nav_' + oi[i] + '_o.gif';
		}
	}
}

function ci(l) {
	var i = l.firstChild.src;
	var il = i.length
	if(i.substring(il-6,il-4) == "_o") {
		l.firstChild.src = i.substring(0,il-6) + '.gif';
	} else {
		l.firstChild.src = i.substring(0,il-4) + '_o.gif';
	}	
}

// Show a tooltip relative to an input field (make an offer page)
function show_tooltip2(tooltip_id, input_id, width) {
	obj = document.getElementById(input_id);
	show_tooltip(tooltip_id, obj, width);
}

function show_tooltip(tooltip_id, input, width) {
	tooltip = document.getElementById(tooltip_id);
	leftpos = 0;
	toppos = 0;
	
	toppos = findPosY(input);
	leftpos = findPosX(input);
	
	toppos += input.offsetHeight;
	
	if (is_ie) {
		leftpos += 1;
	}
	
	if (is_ie && (tooltip_id == 'additional_deposit_tip')) {
		document.getElementById('good_til_am_pm').style.visibility = 'hidden';
	}
	
	tooltip.style.top = (toppos) + 'px';
	tooltip.style.left = (leftpos) + 'px';
	if (width) {
		tooltip.style.width = width + 'px';
	} else if (input.offsetWidth > 250) {
		tooltip.style.width = (input.offsetWidth - 18) + 'px';
	}
	tooltip.style.display = 'block';
}

// Hide a tooltip
function hide_tooltip(tooltip_id) {
	if (is_ie && (tooltip_id == 'additional_deposit_tip')) {
		document.getElementById('good_til_am_pm').style.visibility = 'visible';
	}
	document.getElementById(tooltip_id).style.display = 'none';
}


// Following 2 methods from http://www.quirksmode.org/js/findpos.html
function findPosX(obj)
{
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	return curleft;
}

function findPosY(obj)
{
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;
	return curtop;
}