function MM_swapImgRestore() { //v3.0

	var i,x,a=document.MM_sr;

	for (i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;

}

function MM_swapImage() { //v3.0

	var i,j=0,x,a=MM_swapImage.arguments;

	document.MM_sr=new Array;

	for	(i=0;i<(a.length-2);i+=3) if ((x=MM_findObj(a[i]))!=null) {

		document.MM_sr[j++]=x;

		if (!x.oSrc) x.oSrc=x.src;

		x.src=a[i+2];

	}

}

function MM_preloadImages() { //v3.0

	var d=document;

	if (d.images) {

		if (!d.MM_p) d.MM_p=new Array();

		var i,j=d.MM_p.length,a=MM_preloadImages.arguments;

		for (i=0; i<a.length; i++) if (a[i].indexOf("#")!=0) {

			d.MM_p[j]=new Image;

			d.MM_p[j++].src=a[i];

		}

	}

}

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;

}

window.onload = function() {

	MM_preloadImages(

		'images/home-nav-on.gif',

		'images/about-us-nav-on.gif',

		'images/home-energy-audit-nav-on.gif',

		'images/new-sysems-nav-on.gif',

		'images/service-nav-on.gif',

		'images/manufacturing-partners-nav-on.gif',

		'images/references-nav-on.gif',

		'images/contact-us-nav-on.gif'

	);

};