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scrollfix.js
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scrollfix.js
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/**
* ScrollFix v0.1
* http://www.joelambert.co.uk
*
* Copyright 2011, Joe Lambert.
* Free to use under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*/
var ScrollFix = function(elem) {
// Variables to track inputs
var startY, startTopScroll;
elem = elem || document.querySelector(elem);
// If there is no element, then do nothing
if(!elem)
return;
// Handle the start of interactions
elem.addEventListener('touchstart', function(event){
startY = event.touches[0].pageY;
startTopScroll = elem.scrollTop;
if(startTopScroll <= 0)
elem.scrollTop = 1;
if(startTopScroll elem.offsetHeight >= elem.scrollHeight)
elem.scrollTop = elem.scrollHeight - elem.offsetHeight - 1;
}, false);
};