function enlargeThumb(thumbNum) {
	try {
		var d = document.getElementById("thumbWrapper" + thumbNum);
		var im = d.getElementsByTagName("img")[0];
		im.width = parseInt(im.width) + 6;
		im.height = parseInt(im.height) + 6;
		d.className = "img-wrapper-over";
	}
	catch(e) {
		
	}
}

function backrollThumb(thumbNum) {
	try {
		var d = document.getElementById("thumbWrapper" + thumbNum);
		var im = d.getElementsByTagName("img")[0];
		im.width = parseInt(im.width) - 6;
		im.height = parseInt(im.height) - 6;
		d.className = "img-wrapper";
	}
	catch(e) {
		
	}
}

function displaySubNav(id) {
	var u = document.getElementById("subNav" + id);
	if (u != null) {
		u.style.display = "block"; 
	}
}

function hideSubNav(id) {
	var u = document.getElementById("subNav" + id);
	if (u != null) {
		u.style.display = "none"; 
	}	
}