var oldBlockId = "imageblock1";

/* rotating was retired and replaced with rollovers

var oldTable = 1;
var currentTable = 1;
var totalTables = 2;
var imageDisplayDelay = 5000;  // time between image swaps


self.setTimeout("rotateImages()", imageDisplayDelay);

function rotateImages() {

	oldTable = currentTable;
	currentTable = currentTable % totalTables;
	currentTable++;
	rotateImage('imageblock');

	self.setTimeout("rotateImages()", imageDisplayDelay);
}

function rotateImage(blockName) {

	oldTableId = blockName + oldTable;
	currentTableId = blockName + currentTable;

	var oldTableElement = document.getElementById(oldTableId);
	var newTableElement = document.getElementById(currentTableId);
	oldTableElement.style.display = "none";
	newTableElement.style.display = "block";

}

*/

function showImageBlock(newblockId, number) {

	if(oldBlockId != null) {
		var oldElement = document.getElementById(oldBlockId);
	}
	var newElement = document.getElementById(newblockId);
	if(oldBlockId != null) {
		oldElement.style.display = "none";
	}
	newElement.style.display = "block";

	oldBlockId = newblockId;

}