if (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 ))|| ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 ))) {version = "supported";}else {version = "notsupported";}

if (version == "supported") 

{img1on = new Image();img1on.src = "../gif/tnavon01.gif"

img1off = new Image();img1off.src = "../gif/tnavof01.gif";}



if (version == "supported")

{img2on = new Image();img2on.src = "../gif/tnavon02.gif"

img2off = new Image();img2off.src = "../gif/tnavof02.gif";}



if (version == "supported") 

{img3on = new Image();img3on.src = "../gif/tnavon03.gif"

img3off = new Image();img3off.src = "../gif/tnavof03.gif";}



if (version == "supported") 

{img4on = new Image();img4on.src = "../gif/tnavon04.gif"

img4off = new Image();img4off.src = "../gif/tnavof04.gif";}



if (version == "supported") 

{img5on = new Image();img5on.src = "../gif/tnavon05.gif"

img5off = new Image();img5off.src = "../gif/tnavof05.gif";}



if (version == "supported") 

{img6on = new Image();img6on.src = "../gif/tnavon06.gif"

img6off = new Image();img6off.src = "../gif/tnavof06.gif";}



if (version == "supported") 

{img21on = new Image();img21on.src = "../gif/ricon01.gif"

img21off = new Image();img21off.src = "../gif/ricof01.gif";}


if (version == "supported") 

{img22on = new Image();img22on.src = "../gif/ricon02.gif"

img22off = new Image();img22off.src = "../gif/ricof02.gif";}


if (version == "supported") 

{img23on = new Image();img23on.src = "../gif/ricon03.gif"

img23off = new Image();img23off.src = "../gif/ricof03.gif";}


if (version == "supported") 

{img24on = new Image();img24on.src = "../gif/ricon04.gif"

img24off = new Image();img24off.src = "../gif/ricof04.gif";}


if (version == "supported") 

{img25on = new Image();img25on.src = "../gif/ricon05.gif"

img25off = new Image();img25off.src = "../gif/ricof05.gif";}


if (version == "supported") 

{img26on = new Image();img26on.src = "../gif/ricon06.gif"

img26off = new Image();img26off.src = "../gif/ricof06.gif";}


if (version == "supported") 

{img27on = new Image();img27on.src = "../gif/ricon07.gif"

img27off = new Image();img27off.src = "../gif/ricof07.gif";}


if (version == "supported") 

{img28on = new Image();img28on.src = "../gif/ricon08.gif"

img28off = new Image();img28off.src = "../gif/ricof08.gif";}


if (version == "supported") 

{img29on = new Image();img29on.src = "../gif/ricon09.gif"

img29off = new Image();img29off.src = "../gif/ricof09.gif";}


if (version == "supported") 

{img30on = new Image();img30on.src = "../gif/ricon10.gif"

img30off = new Image();img30off.src = "../gif/ricof10.gif";}


if (version == "supported") 

{img31on = new Image();img31on.src = "../gif/ricon11.gif"

img31off = new Image();img31off.src = "../gif/ricof11.gif";}


function img_on(imgName) 

{if (version == "supported") 

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

{if (version == "supported") 

{imgOff = eval(imgName + "off.src");document [imgName].src = imgOff;}}