var tour=null;
function imgzoom(path){
  nname=navigator.appName;
  if(tour){
    if((nname.indexOf('Netscape')>=0 && document.hiddenform.closed.value==0) || (nname.indexOf('Netscape')<0) ){
      tour.close();
    }
  }
  tour=window.open(path,'imgzoom','toolbar=no,location=no,scrollbars=yes,resizeable=yes,menubar=no,status=no,top=30,left=30,width=500,height=600');
}

function bookmark()
{
	if ((navigator.appName == "Microsoft Internet Explorer")&&(parseInt(navigator.appVersion) >= 4))
	{
		window.external.AddFavorite(location.href,document.title);
	}
	else
	{
		alert ("Press Control-D to bookmark this page (after you close this box)!");
	}
}

var tour2=null;
function openFAQ(path){
nname=navigator.appName;
if(tour2){
if((nname.indexOf('Netscape')>=0 && document.hiddenform.closed.value==0) || (nname.indexOf('Netscape')<0) ){
tour2.close();
}
}
tour2=window.open(path,'FAQ','toolbar=no,location=no,scrollbars=yes,resizeable=no,menubar=no,status=no,top=30,left=30,width=530,height=600');
}

var tour3=null;
function techdraw(path){
nname=navigator.appName;
if(tour3){
if((nname.indexOf('Netscape')>=0 && document.hiddenform.closed.value==0) || (nname.indexOf('Netscape')<0) ){
tour3.close();
}
}
tour3=window.open(path,'TechDrawing','toolbar=no,location=no,scrollbars=yes,resizeable=yes,menubar=no,status=no,top=30,left=30,width=700,height=600');
}