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if(document.images){
b1off=new Image(); b1off.src="images/landline_img.jpg";
b1on=new Image(); b1on.src="images/landline_img1.jpg";

b2off=new Image(); b2off.src="images/it_services_img.jpg";
b2on=new Image(); b2on.src="images/it_services_img1.jpg";

b3off=new Image(); b3off.src="images/internet_img.jpg";
b3on=new Image(); b3on.src="images/internet_img1.jpg";

b4off=new Image(); b4off.src="images/mobile_img.jpg";
b4on=new Image(); b4on.src="images/mobile_img1.jpg";

b5off=new Image(); b5off.src="images/telephone_img.jpg";
b5on=new Image(); b5on.src="images/telephone_img1.jpg";

b6off=new Image(); b6off.src="images/users_img.jpg";
b6on=new Image(); b6on.src="images/users_img1.jpg";
}

function act(bn){
	if(document.images){
		loc = "b" + bn;
		document[loc].src = eval(loc + "on.src");
	}
}
function inact(bn){
	if(document.images){
		loc = "b" + bn;
		document[loc].src = eval(loc + "off.src");
	}
}
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