var currentTooltip;
var interval;
function show_tip(id)
{
	currentTooltip = document.getElementById(id);
	if(currentTooltip)
	{
		currentTooltip.style.top = tempY + 15 + 'px'; 
		currentTooltip.style.left = tempX - 30 + 'px';
		if(currentTooltip.style.display!='block')
		{
			currentTooltip.style.display='block';
			currentTooltip.style.position='absolute';
		}
	} 
}
function hide_tip()
{
	if(currentTooltip) 
	{
		currentTooltip.style.display='none';
	}
	currentTooltip = false;
}

// Detect if the browser is IE or not.
// If it is not IE, we assume that the browser is NS.
var IE = document.all?true:false;

// If NS -- that is, !IE -- then set up for mouse capture
if (!IE) document.captureEvents(Event.MOUSEMOVE)

// Set-up to use getMouseXY function onMouseMove
document.onmousemove = getMouseXY;

// Temporary variables to hold mouse x-y pos.s
var tempX = 0;
var tempY = 0;

// Main function to retrieve mouse x-y pos.s
function getMouseXY(e) {
	if (IE) 
	{ // grab the x-y pos.s if browser is IE
		tempX = event.clientX + document.documentElement.scrollLeft;
		tempY = event.clientY + document.documentElement.scrollTop;
	} 
	else 
	{  // grab the x-y pos.s if browser is NS
		tempX = e.pageX;
		tempY = e.pageY;
	}  
	// catch possible negative values in NS4
	if (tempX < 0){tempX = 0}
	if (tempY < 0){tempY = 0}  
	if(currentTooltip)
	{
		currentTooltip.style.top = tempY + 15 + 'px'; 
		currentTooltip.style.left = tempX - 30 + 'px';
	} 
	return true;
}