function popup(theURL)
{
  var desktop = window.open( theURL, "popup",   "toolbar=no,location=no,status=no,menubar=no,scrollbars=no,width=400,height=430,resizable=no,left=50,top=50" );
}

function poppage(theURL)
{
  var desktop = window.open( theURL, "popup",   "toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,width=630,resizable=yes,left=50,top=50" );
}

browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion); 

if (browser_name == "Netscape" && browser_version >= 3.0) { roll = 'true'; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0)
  { roll = 'true'; }
else { roll = 'false'; }

function msover(img1,ioe) { 
  if (roll == 'true') {
    document.images[img1].src = ioe; 
  }
}

function msout(img1,ioe) { 
  if (roll == 'true') { 
    document.images[img1].src = ioe;
  } 
}