var z = 1;
function cj_show(id) {
  	var pt ;
	if (typeof window.pageYOffset != 'undefined') {
		pt = window.pageYOffset;
	}
	else if (typeof document.compatMode != 'undefined' &&
		document.compatMode != 'BackCompat') {
		pt = document.documentElement.scrollTop;
	}
	else if (typeof document.body != 'undefined') {
		pt = document.body.scrollTop;
	}
	top_position = pt +20;
	document.getElementById('trans').style.height = "100%";
	document.getElementById('trans').style.visibility = "visible";
	document.getElementById('gallery').style.visibility = "visible";
	document.getElementById('gallery').style.top = top_position+"px";
	cj_chg_image(id);
}

function cj_chg_image(id){
	z = id;
	picture = new Image();
	picture.src = document.getElementById('i'+id).src.replace('/th/', '/');
	window.document.images['gimg'].src = picture.src;
}

function cj_close_img(){
		picture = new Image();
		picture.src = "img/space.gif";
		document.getElementById('trans').style.visibility = "hidden";
		document.getElementById('gallery').style.visibility = "hidden";
		window.document.images['gimg'].src = picture.src;
	}
function cj_left(){
		z--;
		if(z==0) z = 18;
		cj_chg_image(z);
	}

function cj_right(){
	z++;
	if(z==19) z = 1;
	cj_chg_image(z);
}