ROLLOVER_IMAGE_SRC = new Array();
ROLLOVER_IMAGE_SRC["nav-home"] = "http://matt.protonovus.com/clients/jasonlam/skyshutter/v1/images/rollovers/home_over.jpg";
ROLLOVER_IMAGE_SRC["nav-gallery"] = "http://matt.protonovus.com/clients/jasonlam/skyshutter/v1/images/rollovers/gallery_over.jpg";
ROLLOVER_IMAGE_SRC["nav-info"] = "http://matt.protonovus.com/clients/jasonlam/skyshutter/v1/images/rollovers/info_over.jpg";
ROLLOVER_IMAGE_SRC["nav-contact"] = "http://matt.protonovus.com/clients/jasonlam/skyshutter/v1/images/rollovers/contact_over.jpg";
ROLLOVER_IMAGE_SRC["nav-about"] = "http://matt.protonovus.com/clients/jasonlam/skyshutter/v1/images/rollovers/about_over.jpg";
ROLLOVER_IMAGES = new Array();
LAST_ROLLOVER_SRC = null;
LAST_ROLLOVER = null;
function PreloadRollovers()
{
	for(key in ROLLOVER_IMAGE_SRC)
	{
		var tImage = new Image();
		tImage.src = ROLLOVER_IMAGE_SRC[key];
		ROLLOVER_IMAGES[key] = tImage;
	}
}

function Rollover(targetID)
{
	var target = document.getElementById(targetID);
	if(!target || !ROLLOVER_IMAGE_SRC[targetID])
		return;
		
	Rollout();
	
	LAST_ROLLOVER = target;
	LAST_ROLLOVER_SRC = target.src;
	target.src = ROLLOVER_IMAGE_SRC[targetID];
}

function Rollout()
{
	if(LAST_ROLLOVER)
	{
		LAST_ROLLOVER.src = LAST_ROLLOVER_SRC;
		LAST_ROLLOVER = null;
	}
}

PreloadRollovers();