if(document.images){
image1on = new Image();
image1on.src = '/images/aboutus_on.gif';
image1off = new Image();
image1off.src = '/images/aboutus_off.gif';

image2on = new Image();
image2on.src = '/images/faq_on.gif';
image2off = new Image();
image2off.src = '/images/faq_off.gif';

image3on = new Image();
image3on.src = '/images/support_on.gif';
image3off = new Image();
image3off.src = '/images/support_off.gif';

image4on = new Image();
image4on.src = '/images/contactus_on.gif';
image4off = new Image();
image4off.src = '/images/contactus_off.gif';

image5on = new Image();
image5on.src = '/images/partners_on.gif';
image5off = new Image();
image5off.src = '/images/partners_off.gif';

moreon = new Image();
moreon.src = '/images/more-on.gif';

moreoff = new Image();
moreoff.src = '/images/more.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");
}
}