// JavaScript Document
function popup() {
	var a=window.innerHeight;
	var minheight = 600;
	var ie = 0;
	var iespace = 25;
	var foxspace = 20;
	if(!a){
		a = document.body.clientHeight;
		ie = 1;
	}
	if(ie) {
		a = a - iespace;
	}
	else {
		a = a - foxspace;
	}
	if(a <= minheight) a = minheight;
	var popup = document.getElementById('popup');
	popup.style.height = a + "px";
	var layer = document.getElementById('layer');
	layer.style.display = 'block';
	popup.style.display = 'block';
}
function popdown() {
	var popup = document.getElementById('popup');
	var layer = document.getElementById('layer');
	layer.style.display = 'none';
	popup.style.display = 'none';
}