function blanket_size() {
	if (typeof window.innerWidth != 'undefined') {
		viewportheight = window.innerHeight;
	} else {
		viewportheight = document.documentElement.clientHeight;
	}
	if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
		blanket_height = viewportheight;
	} else {
		if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
			blanket_height = document.body.parentNode.clientHeight;
		} else {
			blanket_height = document.body.parentNode.scrollHeight;
		}
	}
}


function displayPopup(number)
{
	blanket_size();
	var popup_num="popup_"+number;
	document.getElementById('hide_content').style.height = blanket_height + 'px';
	document.getElementById(popup_num).style.visibility = "visible";
	document.getElementById(popup_num).style.display = "block";
	document.getElementById('hide_content').style.visibility = "visible";
	document.getElementById('hide_content').style.display = "block";
}

function hidePopup(number)
{
	var popup_num="popup_"+number;
	document.getElementById(popup_num).style.visibility = "hidden";
	document.getElementById(popup_num).style.display = "none";
	document.getElementById('hide_content').style.visibility = "hidden";
	document.getElementById('hide_content').style.display = "none";
}