if (document.images) {


    nav65 = new Image();
	nav65.src="b/char_u.png";
    nav66 = new Image();
	nav66.src="b/game_u.png";
    nav67 = new Image();
	nav67.src="b/source_u.png";
    
    nav68 = new Image();
	nav68.src="b/1_u.png";
    nav69 = new Image();
	nav69.src="b/2_u.png";
    nav70 = new Image();
	nav70.src="b/3_u.png";

    nav71 = new Image();
	nav71.src="b/a_u.png";
    nav72 = new Image();
	nav72.src="b/b_u.png";
    nav73 = new Image();
	nav73.src="b/c_u.png";

    nav74 = new Image();
	nav74.src="b/f_u.png";
    nav75 = new Image();
	nav75.src="b/g_u.png";

    nav76 = new Image();
	nav76.src="b/timegrey_u.png";

    nav17 = new Image();
	nav17.src="b/enter_u.png";
    nav18 = new Image();
	nav18.src="b/teletype_u.png";
    nav19 = new Image();
	nav19.src="b/exits_u.png";


}


if (document.images) {

    nav65off = new Image();
	nav65off.src="b/char.png";
    nav66off = new Image();
	nav66off.src="b/game.png";
    nav67off = new Image();
	nav67off.src="b/source.png";
    
    nav68off = new Image();
	nav68off.src="b/1.png";
    nav69off = new Image();
	nav69off.src="b/2.png";
    nav70off = new Image();
	nav70off.src="b/3.png";

    nav71off = new Image();
	nav71off.src="b/a.png";
    nav72off = new Image();
	nav72off.src="b/b.png";
    nav73off = new Image();
	nav73off.src="b/c.png";

    nav74off = new Image();
	nav74off.src="b/f.png";
    nav75off = new Image();
	nav75off.src="b/g.png";


    nav76off = new Image();
	nav76off.src="b/timegrey_c.png";

    nav17off = new Image();
	nav17off.src="b/enter.png";
    nav18off = new Image();
	nav18off.src="b/teletype.png";
    nav19off = new Image();
	nav19off.src="b/exits.png";
	
}




function imgOn(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + ".src");
	}
}

function navOff(navName) {
	if (document.images) {
		document[navName].src = eval(navName + "off.src");
	}
}