imageindex=0;
function fclick(thiss, source, idx)
{
	imageindex=idx;
    mainimage.src=source;
	fover(thiss);
	return false;
}

function fover(thiss)
{
    thiss.style.MozOpacity=0.9;
    thiss.filters.alpha.opacity=90;
	return false;
}

function fout(thiss, idx)
{
    thiss.style.MozOpacity=0.7;
	if (idx==imageindex)
	{
        fover(thiss);
		return false;
	}
    thiss.filters.alpha.opacity=70;
	return false;

}