function $(id)
{
    return document.getElementById(id);
}
function openwindows(url,width,height)
{
    window.open(url,"","width="+width+",height="+height+",location=no,status=yes,resizable=yes,scrollbars=yes,menubar=no,toolbar=no");
}
function openwin(url)
{
    window.open(url,"","");
}