browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion);

if (browser_name == "Netscape" && browser_version >= 3.0) { roll = 'true'; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0) { roll = 'true'; }
else { roll = 'false'; }


function over(img,ref) { if (roll == 'true') { document.images[img].src = ref; } }
function out(img,ref)  { if (roll == 'true') { document.images[img].src = ref; } }


function preloadImg(file){
  image = new Image();
  image.src = file;
}

function rol_img() {	
	preloadImg('img/innerpages/menu/cigars-on.gif');
	preloadImg('img/innerpages/menu/bar-on.gif');
	preloadImg('img/innerpages/menu/inside-on.gif');
	preloadImg('img/innerpages/menu/about-on.gif');
	preloadImg('img/innerpages/menu/contact-on.gif');	
}
function rol_imgIns() {	
	preloadImg('../img/innerpages/menu/cigarson.gif');
	preloadImg('../img/innerpages/menu/bar-on.gif');
	preloadImg('../img/innerpages/menu/inside-on.gif');
	preloadImg('../img/innerpages/menu/about-on.gif');
	preloadImg('../img/innerpages/menu/contact-on.gif');
}