function get_objectTop(obj){
	if (obj.offsetParent == document.body) return obj.offsetTop;
	else return obj.offsetTop + get_objectTop(obj.offsetParent);
}

var bodyHeight = scrollobjHeight = 0;

function scrollBanner()
{
	if ( document.all ) window.attachEvent("onload", initSlide);
	else window.addEventListener("load", initSlide, false);
}

function initSlide()
{
	var scroll = document.getElementById('scroll');
	var scrollTop = get_objectTop(document.getElementById('pos_scroll'));
	scroll.style.top = document.body.scrollTop + scrollTop;
	bodyHeight = document.body.scrollHeight;
	scrollobjHeight = scroll.clientHeight;
	movingSlide();
}

function movingSlide()
{
	var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;
	var scroll = document.getElementById('scroll');
	var scrollTop = get_objectTop(document.getElementById('pos_scroll'));

	yMenuFrom  = parseInt (scroll.style.top, 10);
	yMenuTo    = document.body.scrollTop + 10;
	if(yMenuTo<scrollTop) yMenuTo = scrollTop;
	timeoutNextCheck = 500;
	if (yMenuFrom != yMenuTo) {
		yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 10);
		if (yMenuTo < yMenuFrom) yOffset = -yOffset;
		scroll.style.top = parseInt (scroll.style.top, 10) + yOffset;
		timeoutNextCheck = 10;
	}
	if (scroll.style.pixelTop > bodyHeight - scrollobjHeight) scroll.style.top = bodyHeight - scrollobjHeight;

	setTimeout ("movingSlide()", timeoutNextCheck);
}

function ShowMain(page, wndname, w, h, scroll)
{
    var x     = (screen.width  - w) / 2;
    var y     = (screen.height - h) / 2;

    y -= 20;

    var param = 'height=' + h + ',width=' + w + ',top=' + y + ',left=' + x + ',scrollbars=' + scroll + ',resizable=no,directories=no,status=no,toolbar=no,menubar=no,location=no';

    var hWnd  = window.open('', wndname, param);

    if (hWnd != null)
        hWnd.location.href = page;

    if (parseInt(navigator.appVersion) >= 4) {
        hWnd.window.focus();
   }

    return hWnd;
}