function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

function showItem(element)
{
	myElement = $(element);
	myElement.currentOpacity.clearTimer();
	myElement.currentOpacity.goTo(1);
}

function hideItem(element)
{
	myElement = $(element);
	myElement.currentOpacity.clearTimer();
	myElement.currentOpacity.goTo(0);
}

function $S() {
	var elements = [];
	$c(arguments).each(function(sel){
		if (typeof sel == 'string') {
			sel.getElements().each(function(el){
				elements.push(el);
			});
		}
		else elements.push(sel);
	});
	return elements;
}