if (document.images) 
{ 
nav1on = new Image();
nav1on.src = "../img/nav_home_on.gif";
nav2on = new Image();
nav2on.src = "../img/nav_book_on.gif";
nav3on = new Image();
nav3on.src = "../img/nav_praise_on.gif";
nav4on = new Image();
nav4on.src = "../img/nav_frivolity_on.gif";
nav5on = new Image();
nav5on.src = "../img/nav_buy_on.gif";
nav6on = new Image();
nav6on.src = "../img/nav_author_on.gif";
nav7on = new Image();
nav7on.src = "../img/nav_blog_on.gif";
navaon = new Image();
navaon.src = "../img/btn_summary_on.gif";
navbon = new Image();
navbon.src = "../img/btn_excerpts_on.gif";
navcon = new Image();
navcon.src = "../img/btn_bio_on.gif";
navdon = new Image();
navdon.src = "../img/btn_qa_on.gif";
naveon = new Image();
naveon.src = "../img/btn_guide_on.gif";
navfon = new Image();
navfon.src = "../img/btn_praise_on.gif";


nav1off = new Image();
nav1off.src = "../img/nav_home_off.gif";
nav2off = new Image();
nav2off.src = "../img/nav_book_off.gif";
nav3off = new Image();
nav3off.src = "../img/nav_praise_off.gif";
nav4off = new Image();
nav4off.src = "../img/nav_frivolity_off.gif";
nav5off = new Image();
nav5off.src = "../img/nav_buy_off.gif";
nav6off = new Image();
nav6off.src = "../img/nav_author_off.gif";
nav7off = new Image();
nav7off.src = "../img/nav_blog_off.gif";
navaoff = new Image();
navaoff.src = "../img/btn_summary_off.gif";
navboff = new Image();
navboff.src = "../img/btn_excerpts_off.gif";
navcoff = new Image();
navcoff.src = "../img/btn_bio_off.gif";
navdoff = new Image();
navdoff.src = "../img/btn_qa_off.gif";
naveoff = new Image();
naveoff.src = "../img/btn_guide_off.gif";
navfoff = new Image();
navfoff.src = "../img/btn_praise_off.gif";

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



function popUp(path) {
    features = "width=375,height=251,scrollbars=no,fullscreen=no,toolbar=no,status=no,menubar=no,resizable=no,directories=no,location=no";
	window.open(path, 'popup', features);
}