/*
 *
 * 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,
		font_minus_text: 'уменьшить шрифт',
		font_default_text: 'размер шрифта по умолчанию',
		font_plus_text: 'увеличить шрифт'
	},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="fontMinus '+s+'" title="' + o.font_minus_text + '">A</a><a id="fs_med" class="font '+m+'" title="' + o.font_default_text + '">A</a><a id="fs_lrg" class="fontPlus '+l+'" title="' + o.font_plus_text + '">A</a></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;
		}
	});
};