function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function openplan()
{
MM_openBrWindow('http://www.mappy.com/1/c/tbf/user=mappy;uri=TF4RV+lbNKOu4eRcK2s0++e84cQOnZDvEh7fHl4E4dlrJvxHChyrLpkewbR7HKhOtBOC2syGawb19u+jPR1yOhm2uepp0ei8HKRXek5Fg/TOorrPvrSergeAN7HXDSrW','','');
}