MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

/*For nav menu on devices < 768px wide*/
/*$('#menubutton').click(function(e) {
      $('#menu, #nav').toggleClass('active');
      e.preventDefault();
}); */

/*$(document).ready(function(){

$('#bodyContent').css('display', 'none');
$('#bodyContent').fadeIn(1000);

}); */

function getRandomImage()
{
    var images = [
        "http://vm-healdddev-casva.nga.gov/mediawiki/images/6/64/0728.jpg", 
        "http://vm-healdddev-casva.nga.gov/mediawiki/images/6/67/1010.jpg",
        "http://vm-healdddev-casva.nga.gov/mediawiki/images/4/41/0883.jpg",
        "http://vm-healdddev-casva.nga.gov/mediawiki/images/7/7e/0034.jpg"
    ];
    return images[Math.floor(Math.random() * images.length)];
}

$(document).ready(function(){
    $(".bannerImage").css({'background-image' : 'url(' + getRandomImage() + ')'});
});

/*Adds up button on scroll*/
$('body').prepend('<a href="#" class="back-to-top">Back to Top</a>');

var amountScrolled = 300;

$(window).scroll(function() {
	if ( $(window).scrollTop() > amountScrolled ) {
		$('a.back-to-top').fadeIn('slow');
	} else {
		$('a.back-to-top').fadeOut('slow');
	}
});