function openwindow(URL,width,height)
{
window.open(URL,'3Dviewer','left=30,top=30,width='+width+',height='+height+',toolbar=0,resizable=1,menubar=0');
}

function openwindowdist(URL,width,height)
{
window.open(URL,'','left=30,top=30,width='+width+',height='+height+',toolbar=0,resizable=0,menubar=0,scrollbar=0,status=no,location=0');
}


function PopupCenter(url,w,h) {
  var l = Math.floor((screen.width-w)/2);
  var t = Math.floor((screen.height-h)/2);
     window.open(url,"","width=" + w + ",height=" + h + ",top=" + t + ",left=" + l);
}