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_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;
}

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 - 1); i += 2)
		if ((x = MM_findObj(a[i])) != null) {
			document.MM_sr[j++] = x; 
			if (!x.oSrc) x.oSrc = x.src; 
			x.src = a[i+1];
		}
}

MM_preloadImages('_images/menu/empresa1.gif','_images/menu/produtos1.gif','_images/menu/novidades1.gif','_images/menu/agenda1.gif','_images/menu/faleconosco1.gif')