current_show = 0;
function showDiv( id) {
	if ( current_show != id) {
		before_div_name = "popup" + current_show;
		before_div = document.getElementById( before_div_name);
		if ( before_div) {
			before_div.style.visibility = "hidden";
		}
	}
	current_div_name = "popup" + id;
	current_div = document.getElementById( current_div_name);
	if ( current_div.style.visibility == "hidden") {
		y = current_div.offsetTop;
		if ( document.documentElement.scrollTop == 0) {
			y += document.body.scrollTop;
			if ( (y + current_div.offsetHeight) >= document.documentElement.clientHeight) {
				y = document.documentElement.clientHeight - current_div.offsetHeight - 40;
			}
		} else {
			y += document.documentElement.scrollTop;
			if ( (y + current_div.offsetHeight) >= document.body.clientHeight) {
				y = document.body.clientHeight - current_div.offsetHeight - 40;
			}
		}
		if ( navigator.appName != "Microsoft Internet Explorer") {
			current_div.style.top = y + "px";
		}
		current_div.style.visibility = "visible";
		current_div.style.display = "block";
		current_show = id;
	} else {
		current_div.style.visibility = "hidden";
		current_show = id;
	}
/*
*/
}