(function(){

var $ = function(n){ return document.getElementById(n) };
var sl_num = 1;

var viewSlide=function(n){

	var pre_img;
	$('nowSlide').src = name + "/slide" + n + ".gif";

	$('nowSlide').onload = function(){
		this.pre_img = $('nowSlide').src;
		sl_num = n;
	}
	$('nowSlide').onerror=function(){
		$('nowSlide').src  =this.pre_img; 
	};

};

document.write('<div align="center">');
document.write('<img id="nowSlide" src="' + name + '/slide' + sl_num + '.gif" width="400" height="300"/>');
document.write('<br clear="left" />');
document.write('<a href="javascript:void(0)" id="prev_slide">前[←]</a>　:　');
document.write('<a href="javascript:void(0)" id="next_slide">次[→]</a>');
document.write('</div>');

$('next_slide').onclick= function(){viewSlide(sl_num + 1)};
$('prev_slide').onclick= function(){viewSlide(sl_num - 1)};

}
)();