function init(){
  var agt = navigator.userAgent.toLowerCase();
  var is_ff   = (agt.indexOf('firefox/')!=-1);
  var total_height = 448;
  var bottomDiv = (document.all) ? document.all["contentDiv"] : document.getElementById("contentDiv");
  var men_height = getAnchorPosition("content_top").y - getAnchorPosition("submenu_top").y;
  var content_height = total_height - men_height + (is_ff?12:0);
  bottomDiv.style.height = content_height+"px";
  bottomDiv.style.visibility = "visible";
}
function preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.p) d.p=new Array();
    var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}

function swapImgRestore() { //v3.0
  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function swapImage() { //v3.0
  var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findObj(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

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);

var aImgs = Array("main_menu_01-over.jpg","main_menu_02-over.jpg","main_menu_03-over.jpg","main_menu_04-over.jpg");

if (document.images) {
  for (var i=0; i<aImgs.length; i++){
    var img = new Image(1,1);
    img.src="imgs/"+aImgs[i];
  }
}