function show_tooltip(event,word) {

	if( document.all ) {
		y = 20 + event.clientY + document.body.parentNode.scrollTop;
		x = -4 + event.clientX + document.body.parentNode.scrollLeft;
	} else {
		y = 20 + event.clientY + window.scrollY;
		x = -4 + event.clientX + window.scrollX;
	}
	document.getElementById('tooltip').innerHTML = word;
	document.getElementById('tooltip').style.top = y+"px";
	document.getElementById('tooltip').style.left = x+"px";
	document.getElementById('tooltip').style.display = "block";
}

function move_tooltip(event) {

	if( document.all ) {
		y = 20 + event.clientY + document.body.parentNode.scrollTop;
		x = -4 + event.clientX + document.body.parentNode.scrollLeft;
	} else {
		y = 20 + event.clientY + window.scrollY;
		x = -4 + event.clientX + window.scrollX;
	}
	document.getElementById('tooltip').style.top = y+"px";
	document.getElementById('tooltip').style.left = x+"px";
}

function hide_tooltip(event) {

	document.getElementById('tooltip').style.display = "none";
}