function change_class(divid,classname){
	lnkobj = document.getElementById(divid);
	if (navigator.appName == "Microsoft Internet Explorer") {
		lnkobj.className = classname;
	}
	else {
		lnkobj.setAttribute("class", classname);
	} 
}

show_cat = function (cat_id, fade){
	div_id = "content" + cat_id;
	frmdiv = document.getElementById(div_id);
	todiv = document.getElementById("content_div");
	todiv.innerHTML = frmdiv.innerHTML;
	
	$("ul#featured_cats li").removeClass('featured_on');
	$("ul#featured_cats li#cat_nav" + cat_id).addClass('featured_on');
	
	if(fade){
		$('div#content_div').css({opacity:0});
		$('div#content_div').animate({"opacity": 1}, { duration: 400});
	}
}