<!--
function reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {
	 if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    	document.pgW=innerWidth; document.pgH=innerHeight; onresize=reloadPage; 
	 }
  } else if (innerWidth!=document.pgW || innerHeight!=document.pgH) location.reload();
}
reloadPage(true);

function preloadImages() { //v3.0
  var d=document;
  if(d.images){
    if(!d.pics) d.pics=new Array();
    var i,j=d.pics.length,a=preloadImages.arguments;
	for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){
	  d.pics[j]=new Image; 
	  d.pics[j++].src=a[i];
	}
  }
}

function swapImage(t,i) {
  var rollImgs = new Array();
  rollImgs["home"]=new Array('images/nav/home.gif','images/nav/homeroll.gif');
  rollImgs["surgery"]=new Array('images/nav/surgery.gif','images/nav/surgeryroll.gif');
  rollImgs["staff"]=new Array('images/nav/staff.gif','images/nav/staffroll.gif');
  rollImgs["treatments"]=new Array('images/nav/treatments.gif','images/nav/treatmentsroll.gif');
  rollImgs["cosmetic"]=new Array('images/nav/cosmetic.gif','images/nav/cosmeticroll.gif');
  rollImgs["contact"]=new Array('images/nav/contact.gif','images/nav/contactroll.gif');
  rollImgs["advice"]=new Array('images/nav/advice.gif','images/nav/adviceroll.gif');
  var target=document.getElementById(t);
  target.src=rollImgs[t][i];
}
//-->