function adjustFontSize(obj) {
    var topNavHeight = "32";
    var size = "13";
    var textresized = 1;
        
    if (obj != null) {
        if (obj == "large_a") {
            size = "15";
            topNavHeight = "65";
        }
        else if (obj == "medium_a") {
            size = "14";
            topNavHeight = "50";
        }

		var alt = "";
        $("#text_size img").each(function() {
			alt = $(this).attr("alt");
            if ($(this).attr("id") == obj) {
				$(this).parent("a").html('<img src="../images/' + $(this).attr("id") + '_on.png" id="' + $(this).attr("id") + '" alt="'+ alt + '" title="'+ alt + '" width="16" height="16" />').pngFix();
                $(this).css("cursor", "default");
            }
            else {
				$(this).parent("a").html('<img src="../images/' + $(this).attr("id") + '_off.png" id="' + $(this).attr("id") + '" alt="'+ alt + '" title="'+ alt + '" width="16" height="16" />').pngFix();
                $(this).css("cursor", "pointer");
            }
        });
    }
    
    $("body").css("font-size", size + "px");
    $(".topNavPOTCItem").css("height", topNavHeight + "px");
}