
//  <a href="noPop.html" onclick="return openPerfectPopup(300,'Title','Contents');">Open a popup containing text</a>.

function getRefToDivMod( divID, oDoc ) {
  if( !oDoc ) { oDoc = document; }
  if( document.layers ) {
    if( oDoc.layers[divID] ) { return oDoc.layers[divID]; } else {
      for( var x = 0, y; !y && x < oDoc.layers.length; x++ ) {
        y = getRefToDivMod(divID,oDoc.layers[x].document); }
      return y; } }
  if( document.getElementById ) { return oDoc.getElementById(divID); }
  if( document.all ) { return oDoc.all[divID]; }
  return document[divID];
}

function openPerfectPopup(oW,oTitle,oContent) {
  var x = window.open('','windowName','width=500,height=400,resizable=1');
  if( !x ) { return true; }
  x.document.open();
  x.document.write('<html><head><title>'+oTitle+'<\/title><\/head><body>'+
    (document.layers?('<layer left="0" top="0" width="'+oW+'" id="myID">')
      :('<div style="position:absolute;left:0px;top:0px;display:table;width:'+oW+'px;" '+
      'id="myID">'))+
    oContent+(document.layers?'<\/layer>':'<\/div>')+'<\/body><\/html>');
  x.document.close();
  var oH = getRefToDivMod( 'myID', x.document ); if( !oH ) { return false; }
  var oH = oH.clip ? oH.clip.height : oH.offsetHeight; if( !oH ) { return false; }
  x.resizeTo( oW + 200, oH + 200 );
  var myW = 0, myH = 0, d = x.document.documentElement, b = x.document.body;
  if( x.innerWidth ) { myW = x.innerWidth; myH = x.innerHeight; }
  else if( d && d.clientWidth ) { myW = d.clientWidth; myH = d.clientHeight; }
  else if( b && b.clientWidth ) { myW = b.clientWidth; myH = b.clientHeight; }
  if( window.opera && !document.childNodes ) { myW += 16; }
  x.resizeTo( oW = oW + ( ( oW + 200 ) - myW ), oH = oH + ( (oH + 200 ) - myH ) );
  var scW = screen.availWidth ? screen.availWidth : screen.width;
  var scH = screen.availHeight ? screen.availHeight : screen.height;
  x.moveTo(Math.round((scW-oW)/2),Math.round((scH-oH)/2));
  if( x.focus ) { x.focus(); }
  return false;
}  
