var browser = '';

function positionTVC(anchor, viewport)
{
	if (navigator.userAgent.indexOf('MSIE') != -1) 
	{ 
		browser = 'ie'; 
	}
	if (navigator.userAgent.indexOf('Firefox') != -1) 
	{ 
		browser = 'firefox'; 
	}

    if (anchor != '') {
        var c = getAnchorPosition(anchor);

        var v = document.getElementById(viewport);
        v.style.left = c.x + "px";
        v.style.top = c.y + "px";
        v.style.display = "block";

        var shim = document.getElementById('TVCShim');
        shim.x = c.x - 337 + "px";
        shim.y = c.y + "px";
        shim.style.left = c.x - 337 + "px";
        shim.style.top = c.y + "px";
    }
}