/*
* 
* jFontSizer Plugin
* Written by fluidByte - http://www.fluidbyte.net
* 
* 
*/

jQuery.fn.jfontsizer = function (o) {

    // Cookie functions
    function setCookie(c_name, value, expiredays) {
        var exdate = new Date();
        exdate.setDate(exdate.getDate() + expiredays);
        document.cookie = c_name + "=" + escape(value) +
	((expiredays == null) ? "" : ";expires=" + exdate.toGMTString());
    }

    function getCookie(c_name) {
        if (document.cookie.length > 0) {
            c_start = document.cookie.indexOf(c_name + "=");
            if (c_start != -1) {
                c_start = c_start + c_name.length + 1;
                c_end = document.cookie.indexOf(";", c_start);
                if (c_end == -1) c_end = document.cookie.length;
                return unescape(document.cookie.substring(c_start, c_end));
            }
        }
        return "";
    }


    // Defaults
    var o = jQuery.extend({
        applyTo: 'body',
        changesmall: '2',
        changelarge: '2',
        expire: 30
    }, o);

    var s = '';
    var m = '';
    var l = '';

    // Current
    var c = 'fs_med';

    // Check cookie  
    if (getCookie('fsizer') != "") {
        var c = getCookie('fsizer');
        switch (c) {
            case 'fs_sml':
                s = 'fsactive';
                $(o.applyTo).css('font-size', '.' + (10 - o.changesmall) + 'em');
                break;
            case 'fs_med':
                m = 'fsactive';
                $(o.applyTo).css('font-size', '1em');
                break;
            case 'fs_lrg':
                l = 'fsactive';
                $(o.applyTo).css('font-size', '1.' + o.changelarge + 'em');
                break;
        }
    }
    else {
        m = "fsactive";
    }

    // Create font-chooser box
    $(this).html('<div class="fsizer"><a id="fs_sml" class="' + s + '">A</a><a id="fs_med" class="' + m + '">A</a><a id="fs_lrg" class="' + l + '">A</a><br style="clear: both" /></div>');


    $('.fsizer a').click(function () {

        var t = $(this).attr('id');

        setCookie('fsizer', t, o.expire);

        $('.fsizer a').removeClass('fsactive');
        $(this).addClass('fsactive');

        var f = $(o.applyTo).css('font-size');

        switch (t) {
            case 'fs_sml':
                $(o.applyTo).css('font-size', '.' + (10 - o.changesmall) + 'em');
                break;
            case 'fs_med':
                $(o.applyTo).css('font-size', '1em');
                break;
            case 'fs_lrg':
                $(o.applyTo).css('font-size', '1.' + o.changelarge + 'em');
                break;
        }
    });
};