if (document.images) {

img1on = new Image();   //Active Image
img1on.src = "images/btn_homeboxoffice_on.gif";
img2on = new Image();
img2on.src = "images/btn_interview_on.gif";
img3on = new Image();
img3on.src = "images/btn_books_on.gif";
img4on = new Image();
img4on.src = "images/btn_toolbox_cd_on.gif";
img5on = new Image();
img5on.src = "images/btn_bookandcd_on.gif";
img6on = new Image();  
img6on.src = "images/btn_showtimes_on.gif";
img7on = new Image();
img7on.src = "images/btn_ravereviews_on.gif";
img8on = new Image();
img8on.src = "images/btn_gossip_on.gif";
img9on = new Image();
img9on.src = "images/btn_inproduction_on.gif";
img10on = new Image();
img10on.src = "images/btn_independentclassic_on.gif";
img11on = new Image();  
img11on.src = "images/btn_nowplaying_on.gif";
img12on = new Image();
img12on.src = "images/btn_openingsoon_on.gif";
img13on = new Image();
img13on.src = "images/btn_ticket_on.gif";


img1off = new Image();   //Inactive Image
img1off.src = "images/btn_homeboxoffice.gif";
img2off = new Image();
img2off.src = "images/btn_interview.gif";
img3off = new Image();
img3off.src = "images/btn_books.gif";
img4off = new Image();
img4off.src = "images/btn_toolbox_cd.gif";
img5off = new Image();
img5off.src = "images/btn_bookandcd.gif";
img6off = new Image();  
img6off.src = "images/btn_showtimes.gif";
img7off = new Image();
img7off.src = "images/btn_ravereviews.gif";
img8off = new Image();
img8off.src = "images/btn_gossip.gif";
img9off = new Image();
img9off.src = "images/btn_inproduction.gif";
img10off = new Image();
img10off.src = "images/btn_independentclassic.gif";
img11off = new Image();  
img11off.src = "images/btn_nowplaying.gif";
img12off = new Image();
img12off.src = "images/btn_openingsoon.gif";
img13off = new Image();
img13off.src = "images/btn_ticket.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");
		}
}