var selectedThumb = null;

var space_side_off = "/common/images/thumbnails/thumb_space_side.gif";
var space_side_on = "/common/images/thumbnails/thumb_space_sideH.gif";

var space_top_off = "/common/images/thumbnails/thumb_space_top.gif";
var space_top_on = "/common/images/thumbnails/thumb_space_topH.gif";

var space_bottom_off = "/common/images/thumbnails/thumb_space_bottom.gif";
var space_bottom_on = "/common/images/thumbnails/thumb_space_bottomH.gif";

function selectThumb(imgName) {

	if (document.images) {
	
		document["space" + imgName + "a"].src = space_top_on;
		document["space" + imgName + "b"].src = space_side_on;
		document["space" + imgName + "c"].src = space_side_on;
		document["space" + imgName + "d"].src = space_bottom_on;
		
		selectedThumb = imgName;
	}

}

function unSelectThumb() {

	if (selectedThumb == null) return;

	if (document.images) {
	
		document["space" + selectedThumb + "a"].src = space_top_off;
		document["space" + selectedThumb + "b"].src = space_side_off;
		document["space" + selectedThumb + "c"].src = space_side_off;
		document["space" + selectedThumb + "d"].src = space_bottom_off;
		
		selectedThumb = null;
	}

}

function thumbnailLoader() {

	preloadImages(space_side_off, space_side_on, 
				space_top_off, space_top_on, 
				space_bottom_off, space_bottom_on);

}