jquery.ui.totop.js
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/*
|--------------------------------------------------------------------------
| UItoTop jQuery Plugin 1.2 by Matt Varone
| http://www.mattvarone.com/web-design/uitotop-jquery-plugin/
|--------------------------------------------------------------------------
*/
(function($){
$.fn.UItoTop = function(options) {
var defaults = {
text: 'To Top',
min: 200,
inDelay:600,
outDelay:400,
containerID: 'toTop',
containerHoverID: 'toTopHover',
scrollSpeed: 1200,
easingType: 'linear'
},
settings = $.extend(defaults, options),
containerIDhash = '#' + settings.containerID,
containerHoverIDHash = '#'+settings.containerHoverID;
$('body').append('<a href="#" id="'+settings.containerID+'">'+settings.text+'</a>');
$(containerIDhash).hide().on('click.UItoTop',function(){
$('html, body').animate({scrollTop:0}, settings.scrollSpeed, settings.easingType);
$('#'+settings.containerHoverID, this).stop().animate({'opacity': 0 }, settings.inDelay, settings.easingType);
return false;
})
.prepend('<span id="'+settings.containerHoverID+'"></span>')
.hover(function() {
$(containerHoverIDHash, this).stop().animate({
'opacity': 1
}, 600, 'linear');
}, function() {
$(containerHoverIDHash, this).stop().animate({
'opacity': 0
}, 700, 'linear');
});
$(window).scroll(function() {
var sd = $(window).scrollTop();
if(typeof document.body.style.maxHeight === "undefined") {
$(containerIDhash).css({
'position': 'absolute',
'top': sd + $(window).height() - 50
});
}
if ( sd > settings.min )
$(containerIDhash).fadeIn(settings.inDelay);
else
$(containerIDhash).fadeOut(settings.Outdelay);
});
};
})(jQuery);