var base = '/images/nav/';

//function onImg(e,imgname)
//{
//	var iName = base + imgname + "_on.gif";
//	e.src = iName;
//}

//function offImg(e,imgname)
//{
//	var iName = base + imgname + "_of.gif";
//	e.src = iName;
//}

function onImgF(e,imgname)
{
	var img = e.src;
	base = img.substring(0,img.lastIndexOf('/')) + '/';
	var iName = base + imgname + "_on.gif";
	e.src = iName;
}

function offImgF(e,imgname)
{
	var img = e.src;
	base = img.substring(0,img.lastIndexOf('/')) + '/';
	var iName = base + imgname + "_of.gif";
	e.src = iName;
}