var IE4 = false; 
var NS4 = false;
var NS6 = false;
var macintosh = false;

if (document.all) IE4 = true;
if (document.layers && !document.getElementById) NS4 = true;
if (document.getElementById && !document.all) NS6 = true;

if (navigator.userAgent.indexOf("Mac")!=-1)  macintosh = true; 

function rollover(button,axtn){
	if (document.images){ document.images[button].src="graphics/"+button+"-"+axtn+".gif";	}
}
function rollover2(button,axtn){
	if (document.images){ document.images[button].src="graphics/"+button+"-"+axtn+".jpg";	}
}

function popup(newurl,winWidth,winHeight){

		var w = 640, h = 480;
		
		if (document.all || document.layers) {
		   w = screen.availWidth;
		   h = screen.availHeight;
		}
		
		var leftPos = (w-winWidth)/2, topPos = (h-winHeight)/2;

      featuretext = "toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizeable=no,width="+winWidth+",height="+winHeight+",left="+leftPos+",top="+topPos;
     
	  wName = "Gundry";
		
	  if (newurl.indexOf("contact.asp")!=-1) wName = "GundryContact";
	  if (newurl.indexOf("price.asp")!=-1) wName = "GundryPrice";
	  
	  mainView = window.open(newurl,wName,featuretext);
      mainView.focus();
	
}