// Top-Navigation
function getStyleObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM
	return document.layers[objectId];
    } else { 	return false;     } } 

function changeObjectVisibility(objectId, newVisibility) {
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.visibility = newVisibility;
	return true;
    } else { 	return false;     } }

function moveObject(objectId, newXCoordinate, newYCoordinate) {
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.left = newXCoordinate;
	styleObject.top = newYCoordinate;
	return true;
    } else { 	return false;     } }

function showMenu(menuNumber, eventObj) {
var menuId = 'menu' + menuNumber;
if (getStyleObject(menuId).visibility == 'visible' ||
     getStyleObject(menuId).visibility == 'show') {
     hideAllMenus();
	return false;  }
hideAllMenus();
    if(changeObjectVisibility(menuId, 'visible')) {
	eventObj.cancelBubble = true;
	return true;
    } else { 	return false;     } }

var numMenus = 4;

function hideAllMenus() {
    for(counter = 1; counter <= numMenus; counter++) {
	changeObjectVisibility('menu' + counter, 'hidden');     } }

document.onclick = hideAllMenus;

// Inner Preview
function ShowHide(id) {
  obj = document.getElementsByTagName("div");
  if (obj[id].style.visibility == 'visible'){
  obj[id].style.visibility = 'hidden';
  }
  else {
  obj[id].style.visibility = 'visible';
  }
}