$(document).ready(function() {
    $("#font_bigger").click(function() {
        var fontSize = getFontSize();
        $('#txt p').css('font-size', fontSize + fontStep);
        $('#txt ul li').css('font-size', fontSize + fontStep);
        $('#txt ul li a').css('font-size', fontSize + fontStep);
        $('#txt a').css('font-size', fontSize + fontStep);
        $('#txt h2').css('font-size', fontSize + fontStep);
        $('#txt font').css('font-size', fontSize + fontStep);
    });

    $("#font_smaller").click(function() {
        var fontSize = getFontSize();
        $('#txt p').css('font-size', fontSize - fontStep);
        $('#txt ul li').css('font-size', fontSize - fontStep);
        $('#txt ul li a').css('font-size', fontSize - fontStep);
        $('#txt a').css('font-size', fontSize - fontStep);
        $('#txt h2').css('font-size', fontSize - fontStep);
        $('#txt font').css('font-size', fontSize - fontStep);
    });

    $("#f_subscribe").click(function(){
        var data = new Object();
        data.name = $("#f_name").val();
        data.email = $("#f_email").val();
        data.action = 'add';

        $.post('ipna/scripts/ajax_newsletter.php', data, function(html){
            alert (html);
        }, 'html');
    });

    $('.gallery_demo_unstyled').addClass('gallery_demo'); // adds new class name to maintain degradability

	$('ul.gallery_demo').galleria({
		history   : true, // activates the history object for bookmarking, back-button etc.
		clickNext : true, // helper for making the image clickable
		insert    : '#main_image', // the containing selector for our main image
		onImage   : function(image,caption,thumb) { // let's add some image effects for demonstration purposes

			// fade in the image & caption
			if(! ($.browser.mozilla && navigator.appVersion.indexOf("Win")!=-1) ) { // FF/Win fades large images terribly slow
				image.css('display','none').fadeIn(1000);
			}
			caption.css('display','none').fadeIn(1000);

			// fetch the thumbnail container
			var _li = thumb.parents('li');

			// fade out inactive thumbnail
			_li.siblings().children('img.selected').fadeTo(500,0.3);

			// fade in active thumbnail
			thumb.fadeTo('fast',1).addClass('selected');

			// add a title for the clickable image
			image.attr('title','Next image >>');
		},
		onThumb : function(thumb) { // thumbnail effects goes here

			// fetch the thumbnail container
			var _li = thumb.parents('li');

			// if thumbnail is active, fade all the way.
			var _fadeTo = _li.is('.active') ? '1' : '0.3';

			// fade in the thumbnail when finnished loading
			thumb.css({display:'none',opacity:_fadeTo}).fadeIn(1500);

			// hover effects
			thumb.hover(
				function() { thumb.fadeTo('fast',1); },
				function() { _li.not('.active').children('img').fadeTo('fast',0.3); } // don't fade out if the parent is active
			)
		}
	});
    
    // Click the first image
    setTimeout ($(".gallery_demo_unstyled li:first").children("img").click(), 2000);
});

var fontStep = 2;

function getFontSize() {
    var currentFontSize = $('#txt p').css('font-size');

    if( !currentFontSize )
        currentFontSize = $('#txt ul li').css('font-size')

    if( !currentFontSize )
        currentFontSize = $('#txt ul li a').css('font-size')

    if( !currentFontSize )
        $('#txt h2').css('font-size');

    if( !currentFontSize )
        $('#txt a').css('font-size');

    var currentFontSizeNum = parseFloat(currentFontSize, 10);
    return currentFontSizeNum;
}

function submitValidation() {

    if ( !requiredValidation() ) return false;
    if ( !emailValidation() ) return false;

}

function requiredValidation() {
    var elements = $(".required");
    var elementLength;

    for (var i=0 ; i<elements.length ; i++) {
       elementLength = elements[i].value.replace(/^\s+/g,'').replace(/\s+$/g,'').length;

       if (elementLength == 0) {
          alert (elements[i].title);
          return false;
       }
    }

    return true;
}

function emailValidation() {

    var elements = $(".email");
    var emailfilter = new RegExp(/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i);

    for (var i=0 ; i<elements.length ; i++) {

       if ( !emailfilter.test(elements[i].value) )
	{
          alert (elements[i].title);
          return false;
       }

    }

    return true;
}