var colour = null;

function highlight_field(field)
{
	colour = field.style.backgroundColor;
	field.style.backgroundColor = '#fffbcc';
}

function revert_field(field)
{
	field.style.backgroundColor = colour;
}

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i < anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "new";
 }
}

shuffle = function(o) {
	for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
	return o;
};


function rotate_images()
{
	var images = [
	'<a href="/sunway.htm"><img src="/images/new/ads/sunway.gif" border="0" alt="Sunway image" width="234" height="70" /></a>',

	'<a href="http://link.hertz.com/link.html?id=11623&LinkType=HZLK&TargetType=Reservations" rel="external"><img src="/images/new/ads/hertz.gif" border="0" alt="Hertz image" width="233" height="57" /></a>',
	
	'<a href="http://www.classicresorts.ie/dest.asp?d=11" rel="external"><img src="/images/new/ads/classic_resorts.gif" border="0" alt="Classic Resorts image" width="233" height="57" /></a>'
	];
	
	document.write(shuffle(images).join("\n"));
	
	document.getElementById('deal_images').style.display = 'block';
}

function display_issue(id)
{
	document.getElementById('issue_preview').innerHTML = document.getElementById('preview' + id).innerHTML;
}