function MM_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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
function changeImagesArray(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) {
			img = null; var n = array[i];
			if (d.images) {img = d.images[n];}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (img) {img.src = array[i+1];}
		}
	}
}
function changeImages() {
	changeImagesArray(changeImages.arguments);
}
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_menu_products = newImage('images/greenfirst/Nav_on/Nav_products.gif');
		pre_menu_initiativespolicies = newImage('images/greenfirst/Nav_on/Nav_initiativespolicies.gif');
		pre_menu_industryinfo = newImage('images/greenfirst/Nav_on/Nav_industryinfo.gif');
		pre_menu_sponsorships = newImage('images/greenfirst/Nav_on/Nav_sponsorships.gif');
		pre_menu_faq = newImage('images/greenfirst/Nav_on/Nav_faq.gif');
		pre_menu_whatsnew = newImage('images/greenfirst/Nav_on/Nav_whatsnew.gif');
		pre_menu_contactus = newImage('images/greenfirst/Nav_on/Nav_contactus.gif');
		pre_menu_search = newImage('images/greenfirst/Nav_on/Nav_search.gif');
		preloadFlag = true;
	}
}