function initWScroll()
{
	_p = document.getElementById("mozgobanner");
	if(_p)
		{

			var _offset = getCurrentYPos();
			var _top = _offset;
			_p.style.marginTop = _top + "px";
		}

	window.onscroll = function()
	{
		if(_p)
		{
			var _offset = getCurrentYPos();
			var _top = _offset;
			_p.style.marginTop = _top + "px";
		}
	}
}

function getCurrentYPos()
{
	var _offset = 0;
    if (document.body && document.body.scrollTop)
      _offset =  document.body.scrollTop;
    if (document.documentElement && document.documentElement.scrollTop)
      _offset = document.documentElement.scrollTop;
    if (window.pageYOffset)
      _offset =  window.pageYOffset;

    _offset = _offset - 100;

    return (_offset < 0) ? 0 : _offset;
 }

if (window.addEventListener){
	window.addEventListener("load", initWScroll, false);
	window.addEventListener("resize", initWScroll, false);
}
else if (window.attachEvent){
	window.attachEvent("onload", initWScroll);
	window.attachEvent("onresize", initWScroll);
}