var evt = null;	// event variable initialisation
	
	function initFollow() {
		document.onmousemove = followMe;	// Whenever mouse moves execute "followMe"
	}
	
	// followMe causes an image to be centred on the mouse pointer
	function followMe(evt) {
		var evt = (evt) ? evt : ((window.event) ? event : null);
		var paintbrush = document.getElementById('paintbrush');
		
		paintbrush.style.top = evt.clientY - paintbrush.offsetHeight;
		paintbrush.style.left = evt.clientX;
		return;
	} // end followMe