var ua = navigator.userAgent;
var ual = ua.toLowerCase();
var brokenHover = (ual.indexOf("msie") != -1);

function subMenu( show, menuNumber ) {
   if (show) {
      if (brokenHover) {
         var sMenu = document.getElementById('subMenu' + menuNumber);
         sMenu.style.display = "block";
      }
   } else {
      if (brokenHover) {
         var sMenu = document.getElementById('subMenu' + menuNumber);
         sMenu.style.display = "none";
      }
   }
}

function rowOverEffect(object) {
  if (object.className == 'main-item') object.className = 'main-item-over';
}

function rowOutEffect(object) {
  if (object.className == 'main-item-over') object.className = 'main-item';
}

function changeImage(img_name, file) {
	var rollover = new Image();
	rollover.src = 'images/' + file;
	document[img_name].src = rollover.src;
}

function restoreImage(img_name, file) {
	var rollout = new Image();
	rollout.src = 'images/' + file;
	document[img_name].src = rollout.src;
}

/*function subMenu( show, menuNumber ) {
   if (show) {
      if (brokenHover) {
         var sMenu = document.getElementById('subMenu' + menuNumber);
         sMenu.style.display = "block";
      }
   } else {
      if (brokenHover) {
         var sMenu = document.getElementById('subMenu' + menuNumber);
         sMenu.style.display = "none";
      }
   }
}*/