/*
 * 
 * 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;
        }   
    });
};