/*
 * 
 * jFontSizer Plugin
 * Written by fluidByte - http://www.fluidbyte.net
 * 
 * 
 */
jQuery.cookie = function(name, value, options) {
    if (typeof value != 'undefined') { // name and value given, set cookie
        options = options || {};
        if (value === null) {
            value = '';
            options.expires = -1;
        }
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new Date();
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
        }
        // CAUTION: Needed to parenthesize options.path and options.domain
        // in the following expressions, otherwise they evaluate to undefined
        // in the packed version for some reason...
        var path = options.path ? '; path=' + (options.path) : '';
        var domain = options.domain ? '; domain=' + (options.domain) : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
    } else { // only name given, get cookie
        var cookieValue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
};

jQuery.fn.jfontsizer = function(o) {

	// Cookie functions
    
	// Defaults
	var o = jQuery.extend( {
		applyTo: 'body',
		changesmall: '2',
		changelarge: '2',
		expire: 0
	},o);
	
	var s = '';
	var m = '';
	var l = '';
	
	// Current
	var c = 'fs_med';
	
	// Check cookie  
	if ($.cookie('fsizer')) {
		var c = $.cookie('fsizer');
		switch (c) {
			case 'fs_sml':
				s = 'fsactive';
			$(o.applyTo).css('font-size','1em');
				break;
			case 'fs_med':
				m = 'fsactive';
			$(o.applyTo).css('font-size','1.'+o.changesmall+'em');
				break;
			case 'fs_lrg':
				l = 'fsactive';
			$(o.applyTo).css('font-size','1.'+(parseInt(o.changesmall)+parseInt(o.changelarge))+'em');
				break;
		}
	}
	else {
		s = "fsactive";
	}
	
	// Create font-chooser box
	$(this).html('<div class="fsizer"><a id="fs_sml" class="'+s+'"></a><a id="fs_med" class="'+m+'"></a><a id="fs_lrg" class="'+l+'"></a><br style="clear: both" /></div>');
	
	
	$('.fsizer a').click(function(){
	
		var t = $(this).attr('id');
		
		$.cookie('fsizer',t,{ expires: o.expire, path: '/', domain: document.domain });
		
		$('.fsizer a').removeClass('fsactive');
		$(this).addClass('fsactive');
		
		var f = $(o.applyTo).css('font-size');	
		
		switch(t){
			case 'fs_sml':
				$(o.applyTo).css('font-size','1em');
				break;
			case 'fs_med':
			    $(o.applyTo).css('font-size','1.'+o.changesmall+'em');
				break;
			case 'fs_lrg':
				$(o.applyTo).css('font-size','1.'+(parseInt(o.changesmall)+parseInt(o.changelarge))+'em');
				break;
		}	
	});
};