if (document.images){
	ff1 = new Image();
	 ff1.src = "images/insidenav1.gif";
	ff2 = new Image();
	 ff2.src = "images/insidenav1_on.gif";
	gg1 = new Image();
	 gg1.src = "images/insidenav2.gif";
	gg2 = new Image();
	 gg2.src = "images/insidenav2_on.gif";
	hh1 = new Image();
	 hh1.src = "images/insidenav3.gif";
	hh2 = new Image();
	 hh2.src = "images/insidenav3_on.gif";
	vv1 = new Image();
	 vv1.src = "images/insidenav4.gif";
	vv2 = new Image();
	 vv2.src = "images/insidenav4_on.gif";
	ii1 = new Image();
	 ii1.src = "images/insidenav5.gif";
	ii2 = new Image();
	 ii2.src = "images/insidenav5_on.gif";
	ll1 = new Image();
	 ll1.src = "images/insidenav6.gif";
	ll2 = new Image();
	 ll2.src = "images/insidenav6_on.gif";
	mm1 = new Image();
	 mm1.src = "images/insidenav7.gif";
	mm2 = new Image();
	 mm2.src = "images/insidenav7_on.gif";
	dd1 = new Image();
	 dd1.src = "images/navhome.gif";
	dd2 = new Image();
	 dd2.src = "images/navhome_on.gif";

}
function rollOn(imgName, imgNo){

		var imagine = eval(imgName + imgNo + ".src");
		document.images[imgName].src = imagine;

}