function openCentralWindow(strURL, strName, iWidth, iHeight, iScroll, iResize) {
    var newWindow = window.open(strURL, strName, "width=" + iWidth + ",height=" + iHeight + ",scrollbars=" + iScroll + ",resizable=" + iResize);
    var iScreenHeight = ((screen.availHeight - iHeight) / 2);
    var iScreenWidth = ((screen.availWidth - iWidth) / 2);
    newWindow.moveTo(iScreenWidth, iScreenHeight);
}

function parentScrollTop() {
    parent.scroll(0,0);
}