function rollover() {
  if (!document.getElementById) return
  
  var imgOrSrc;
  var imgPreload = new Array();
  var mainNav = document.getElementById('mainNav');
  var images = mainNav.getElementsByTagName('img');
  
  for (var i = 0; i < images.length; i++) {
    imgPreload[i] = new Image();
    imgPreload[i].src = images[i].getAttribute('rsrc');
    images[i].onmouseover = function() {
      imgOrSrc = this.getAttribute('src');
      this.setAttribute('src',this.getAttribute('rsrc'))
    }
    images[i].onmouseout = function() {
      this.setAttribute('src',imgOrSrc)
    }
  }
}


var win=null;

function NewWindow(mypage,myname,w,h,scroll,pos){
  LeftPosition=20;
  TopPosition=100;
  settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0';
  win=window.open(mypage,myname,settings);
  if(win.focus){
    win.focus();
  }
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		
		comox_mainNav_company_over = newImage("images/comox_mainNav_company-over.png");
		comox_mainNav_services_over = newImage("images/comox_mainNav_services-over.png");
		comox_mainNav_customers_over = newImage("images/comox_mainNav_customers-over.png");
		comox_mainNav_contacts_over = newImage("images/comox_mainNav_contacts-over.png");
		//comox_mainNav_tracking_over = newImage("images/comox_mainNav_tracking-over.png");

		preloadFlag = true;
	}
}