var chk = navigator.userAgent.indexOf("Mozilla/3")>= 0 || navigator.userAgent.indexOf("Mozilla/4")>= 0;
	if ( chk )	
	{
		var home1= new Image(31,17);
		var home2= new Image(31,17);
		var about1= new Image(93,17);
		var about2= new Image(93,17);
		var resep1= new Image(33,17);
		var resep2= new Image(33,17);
		var tips1= new Image(25,17);
		var tips2= new Image(25,17);
		var contact1= new Image(76,17);
		var contact2= new Image(76,17);
		var ico1= new Image(8,19);
		var ico2= new Image(8,19);

		home1.src="images/home.gif";
		home2.src="images/home2.gif";
		about1.src="images/about.gif";
		about2.src="images/about2.gif";
		resep1.src="images/resep.gif";
		resep2.src="images/resep2.gif";
		tips1.src="images/tips.gif";
		tips2.src="images/tips2.gif";
		contact1.src="images/contact.gif";
		contact2.src="images/contact2.gif";
		ico1.src="images/ico_arrow.gif";
		ico2.src="images/ico_arrow2.gif";
	}
	
	function changeImage(oldImage, newImage) 
	{
		oldImage.src=newImage.src;
	}