// window.js
var appWindow = null;

function openAppWindow(theURL, winName, winWidth, winHeight)
{
  var bName = navigator.appName;             
  var bVer = parseFloat(navigator.appVersion); 
  var bMajVer = parseInt(navigator.appVersion); 
  var ok_browser = false; 
  var centeredLeft = 0, centeredTop  = 0;
  var sFeatureList;
  
  // calculate centered coordinates
  centeredLeft = (screen.width - winWidth) / 2 ; 
  centeredTop = (screen.height - winHeight) / 2 ;  
  
  if ( bName=="Netscape" && bMajVer>=4 )  {
    ok_browser = true; 
    sFeatureList = "scrollbars=yes, resizable=no, width=" + winWidth + ",height=" + winHeight + ",screenX=" + centeredLeft + ",screenY=" + centeredTop + ", status=0" ;	
  }
  else if ( bName=="Microsoft Internet Explorer" && bVer>=4 )  {
    ok_browser = true; 
  sFeatureList = "scrollbars=yes, resizable=no, width=" + winWidth + ", height=" + winHeight + ", left=" + centeredLeft + ", top=" + centeredTop + ", status=0" ;			
  }
  if ( ok_browser==true )  {
    appWindow = window.open(theURL, winName, sFeatureList);
    appWindow.focus();
  }
  else {
    alert( "Your web browser will not work with this application.\nYou must use Microsoft Internet Explorer 4.0 or higher\nor Netscape Navigator 4.0 or higher." ); 
  }
}