/*
| -------------------------------------------------------
| Author	: Feng Wu, http://come.to/feng, feng@ustc.edu
| -------------------------------------------------------
| Created	: 7/28/2002
| -------------------------------------------------------
| Copyright © Feng Wu, 2002
| -------------------------------------------------------
*/


function opaUp(img, stop, step)
{
	// max: 100%
	stop = (stop <= 100) ? stop : 100

	if (img.filters.alpha.opacity < stop)
	{
		img.filters.alpha.opacity += step
	}
	else
	{
		// stop the event
		clearInterval(myHighLighting)
	}
}

function opaDown(img, stop, step)
{
	// min: 0%
	stop = (stop >= 0) ? stop : 0

	if (img.filters.alpha.opacity > stop)
	{
		img.filters.alpha.opacity -= step
	}
	else
	{
		// stop the event
		clearInterval(myHighLighting)
	}
}

function showupImg(img)
{
	img2 = img
	myHighLighting = setInterval("opaUp(img2, 100, 5)", 50)
}

function blurImg(img)
{
	img2 = img
	myHighLighting = setInterval("opaDown(img2, 60, 3)", 50)
}