function initScroll() //Called by onload in { window.setInterval(checkScroll, 100); //Check the scroll position every 100ms (10 times a second) } function getScrollY() { var y; if(window.scrollY) { y = window.scrollY; } else if(document.documentElement && document.documentElement.scrollTop) { y = document.documentElement.scrollTop; } else if(document.body) { y = document.body.scrollTop; } return y; } function checkScroll() { if(getScrollY() >= 208) //Customise this { document.getElementById("floatdiv").style.position="fixed"; document.getElementById("floatdiv").style.marginTop="-208px"; //Customise this } else { document.getElementById("floatdiv").style.position="absolute"; document.getElementById("floatdiv").style.marginTop="0px"; //Customise this }; } function mainFunction(str) { fill(str); }