/* $Id: common.js,v 1.1 2006/03/20 15:26:17 rkerr Exp $ */
/**
 * son of suckerfish menu script from:
 * http://www.htmldog.com/articles/suckerfish/dropdowns/
 */
sfHover = function() {
  var sfEls = document.getElementById("nav").getElementsByTagName("LI");
  for (var i = 0; i < sfEls.length; i++) {
    sfEls[i].onmouseover = function() {
      this.className += " sfhover";
      this.style.zIndex = 200; /* this line added to force flyout to be above relatively positioned stuff in IE */
    }
    sfEls[i].onmouseout = function() {
      this.className = this.className.replace(new RegExp(" sfhover\\b"), "");
    }
  }
}

if (window.attachEvent) {
  window.attachEvent("onload", sfHover);
}

//imageready rollovers
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) {
		nav0_over = newImage("images/nav0-over.gif");
		nav1_over = newImage("images/nav1-over.gif");
		nav2_over = newImage("images/nav2-over.gif");
		nav3_over = newImage("images/nav3-over.gif");
		nav4_over = newImage("images/nav4-over.gif");
		nav5_over = newImage("images/nav5-over.gif");
		nav6_over = newImage("images/nav6-over.gif");
		nav7_over = newImage("images/nav7-over.gif");
		preloadFlag = true;
	}
}