function fullsize(el)
{
	overlay = document.getElementById('overlay');
	overlay.style.display = "block";
	w = 300;
	h = 300;

	// get the x and y coordinates to center the newsletter panel
	x = Math.round((document.body.clientWidth / 2) - (w / 2))
	y = Math.round((document.body.clientHeight / 2) - (h / 2))

	// show the newsletter panel
	big_frame.style.left = x + "px";
	big_frame.style.top = y + "px";
	big_frame.style.display = "block";
}

function blur_bg()
{
    var overlay = document.getElementById("overlay");
    overlay.style.height = document.body.parentNode.scrollHeight + "px";
    overlay.style.width = document.body.parentNode.scrollWidth + "px";
    overlay.style.display = "block";
}