function fc()
{
    ifr = document.getElementById("thumbnail");
    if(ifr)
    {
        ifr.style.display="none";
        ifr.src="about:blank";
    };
    return true;
};

function _f(e,image)
{
	var scrollY = 0;
	
	if ( document.documentElement && document.documentElement.scrollTop )
	{
		scrollY = document.documentElement.scrollTop;
	}
	else if ( document.body && document.body.scrollTop )
	{
		scrollY = document.body.scrollTop;
	}
	else if ( window.pageYOffset )
	{
		scrollY = window.pageYOffset;
	}
	else if ( window.scrollY )
	{
		scrollY = window.scrollY;
	}
	
    _top=e.clientY-270 + (scrollY);
    _left=e.clientX-270;
    ifr = document.getElementById("thumbnail");
    if(ifr)
    {
        ifr.src = image;
        ifr.style.top = _top+'px';
        ifr.style.left = _left+'px';
        ifr.style.display = "block";
    };
    return false;
};

function tab(tabset, tabn)
{
    before = document.getElementById(tabset).active;
    if (before)
    {
        document.getElementById('t_'+before).className = (document.getElementById('t_'+before).last ? "last" : "");
        document.getElementById(before).className = "";
    }
    document.getElementById(tabset).active = tabn;
    document.getElementById(tabn).className = "activetab";
    document.getElementById('t_'+tabn).className += " active";
    if (document.getElementById('t_'+tabn).className.indexOf("last") >= 0)
    {
        document.getElementById('t_'+tabn).last = true;
    }
}