var img1on = new Image(); img1on.src = "images/home.gif";
var img2on = new Image(); img2on.src = "images/bprofile.jpg";
var img3on = new Image(); img3on.src = "images/bproducts.gif";
var img4on = new Image(); img4on.src = "images/bcontact.gif";
var img5on = new Image(); img5on.src = "images/benq.gif";
var img6on = new Image(); img6on.src = "images/bpacking.jpg";
var img1off = new Image(); img1off.src = "images/bhome.gif";  
var img2off = new Image(); img2off.src = "images/profile.jpg";
var img3off = new Image(); img3off.src = "images/products.gif";
var img4off = new Image(); img4off.src = "images/contact.gif";
var img5off = new Image(); img5off.src = "images/enq.gif";
var img6off = new Image(); img6off.src = "images/packing.jpg";

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");
	}
}