function initButton () {
		if (document.all) {
			document.all.topButton.style.pixelLeft = 0
			document.all.topButton.style.visibility = 'visible';
		}
		else if (document.layers) {
			document.topButton.left = 750;
			document.topButton.visibility = 'show';
		}
		else if (document.getElementById) {
			document.getElementById('topButton').style.left = 0;
			document.getElementById('topButton').style.visibility = 'visible';
    	   	}
	}

	function floatButton () {
		if (document.all) {
			document.all.topButton.style.pixelTop = document.body.scrollTop;
		}
		else if (document.layers) {
			document.topButton.top = window.pageYOffset;
		}
		else if (document.getElementById) {
			document.getElementById('topButton').style.top = window.pageYOffset + 'px';
		   }
	}



function init() {

	if (document.all)
	window.onscroll = floatButton;
	else
	setInterval ('floatButton()', 10);
	initButton();
}