function popup(page) {
	var popupWin = window.open(page,"printWin","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resize=0,width=450,height=550");
	popupWin.focus();
	return false;
}

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) {
    home_over = newImage("media/corp_home_on.jpg");
    ir_over = newImage("media/ir_on.jpg");
    media_over = newImage("media/media_on.jpg");
    corp_over = newImage("media/corp_res_on.jpg");
	nav_over = newImage("nav_item_over.gif");
	navtl_over = newImage("nav_toplevel_over.gif");
    preloadFlag = true;
  }
}