function makenav(str,w,h) {
	this.off=new Image (w,h);
	this.off.src=dir+"images-fsb/nav_"+str+".gif";
	this.on=new Image (w,h);
	this.on.src=dir+"images-fsb/nav_"+str+"_on.gif";
}

navIMG=new Array(1);
navIMG[0]=new makenav ("oft_logo",100,105);

function toggle(n,on) {
	if (on==1) {
		document.images["nav"+n].src=navIMG[n].on.src;
	} else {
		document.images["nav"+n].src=navIMG[n].off.src;
	}
}