function Get_Cookie(name) {
  var start = document.cookie.indexOf(name + '=');
  var len = start + name.length + 1;
  if ((!start) && (name != document.cookie.substring(0,name.length)))
    return null;
  if (start == -1)
    return null;
  var end = document.cookie.indexOf(';',len);
  if (end == -1) end = document.cookie.length;
  return unescape(document.cookie.substring(len,end));
}

function Set_Cookie(name,value,expires,path,domain,secure) {
  document.cookie = 
    name + '=' + escape(value) +
    ( (expires) ? ';expires=' + expires.toGMTString() : '') +
    ( (path) ? ';path=' + path : '') + 
    ( (domain) ? ';domain=' + domain : '') +
    ( (secure) ? ';secure' : '');
}

function Delete_Cookie(name,path,domain) {
  if (Get_Cookie(name))
    document.cookie =
      name + '=' +
      ( (path) ? ';path=' + path : '') +
      ( (domain) ? ';domain=' + domain : '') +
      ';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}

function popup_window(the_url, the_width, the_height)
{
	if (the_width == null) {
		the_width = 800;
	}
	if (the_height == null) {
		the_height = 600;
	}
	popupName = 'popupWind';
	popupProp = 'width='+ the_width +',height='+ the_height +',resizable=yes,scrollbars=yes,toolbar=no,location=no,directories=no,status=no,menubar=no,copyhistory=no';
	popupWindow = window.open(the_url, popupName, popupProp);
	popupWindow.focus();
}