// Miscellaneous site functions, etc

 function OpenWin(URL, winName, width, height, scroll)
 {
            var winLeft = (screen.width - width) / 2;
            var winTop = (screen.height - height) / 2;
													
            winData = 'height='+height+',width='+width+',top='+winTop+',left='+winLeft+',scrollbars='+scroll+',resizable';
            win = window.open(URL, winName, winData);
													
            if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
 }
 
function toggleLayer(whichLayer)
{
  var elem, vis;
  if(document.getElementById)                               // this is the way the standards work
    elem = document.getElementById(whichLayer);
  else if(document.all)                                     // this is the way old msie versions work
      elem = document.all[whichLayer];
  else if(document.layers)                                  // this is the way nn4 works
    elem = document.layers[whichLayer];
  vis = elem.style;
                                                            // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
    vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}