if (navigator.userAgent.indexOf("Mozilla/4") >= 0) {
		Image1 = new Image()
		Image1.src = "images/nav_about_over.gif"
		Image2 = new Image()
		Image2.src = "images/nav_product_over.gif"
		Image3 = new Image()
		Image3.src = "images/nav_links_over.gif"
		Image4 = new Image()
		Image4.src = "images/nav_contact_over.gif"
		Image5 = new Image()
		Image5.src = "images/nav_homet_over.gif"
		Image6 = new Image()
		Image6.src = "images/lnav_multi_over.gif"
		Image7 = new Image()
		Image7.src = "images/lnav_syst_over.gif"
		Image8 = new Image()
		Image8.src = "images/lnav_tele_over.gif"
		Image9 = new Image()
		Image9.src = "images/lnav_comp_over.gif"
		Image10 = new Image()
		Image10.src = "images/lnav_email_over.gif"
		Image11 = new Image()
		Image11.src = "images/lnav_photo_over.gif"
		Image12 = new Image()
		Image12.src = "images/nav_thorn_over.gif"				
	}
	
	function rollinGif(imagenum) {
		document.images[ imagenum ].src= "images/" + imagenum + "_over.gif";
	}
				
	function rolloutGif(imagenum) {
		document.images[ imagenum ].src= "images/" + imagenum + "_off.gif";
	}