/**
* Centryl - centralize your business
* http://www.centryl.bg
* Copyright (c) 2011 Centryl Ltd
*
* License
*/
function doOver(top) {
    document.getElementById('intro').style.backgroundPosition = 0+"px -"+top+"px";
}
function doClear() {
    document.getElementById('intro').style.backgroundPosition = "0px 0px";
}