Add this to MediaWiki:Wikia.js:
// ============================== // BackToTopButton // ============================== //A script that adds a "Back To Top" option in the footer of the Oasis theme. //People don't like scrolling back to top on long pages neither do you :) //Created by Noemon from Dead Space Wiki function hideFade () { // hide #backtotop first $( "#backtotop" ).hide (); // fade in #backtotop $( function () { $( window ).scroll( function () { if ( $( this ).scrollTop () > ButtonStart ) { $( '#backtotop' ).fadeIn (); } else { $( '#backtotop' ).fadeOut (); } }); }); } function goToTop (){ // scroll body to 0px on click $( 'body,html' ).animate ({ scrollTop: 0 }, ScrollSpeed ); return false; } function addBackToTop () { if( skin == 'oasis' ) { $('<li id="backtotop" style="position: absolute; right:20px; top:0px; border:none;"><button type="button" value="Back To Top" onClick="goToTop();">Back To Top</button></li>').appendTo('#WikiaBarWrapper .toolbar > .tools'); hideFade (); } } var ButtonStart = 800; var ScrollSpeed = 600; if( !window.BackToTop ) { $( document ).ready( function () { addBackToTop (); }); } var BackToTop = true; // prevent duplication