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-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_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 preloadMenuHelpImages() {
	MM_preloadImages('/images/nb_menu.gif','/images/nb_help.gif');
}

addLoadEvent(preloadMenuHelpImages);