var currentImage1=4;
var pic1= new Array();
var temp_pic1=new Array();
var link1 = new Array();
var pic_title1 = new Array();


pic1[1] = "img/plm/main_net_v032.jpg";
pic1[2] = "img/plm/main_net_v033.jpg";
pic1[3] = "img/plm/main_net_v034.jpg";
pic1[4] = "img/plm/main_net_v036.jpg";


link1[1] = "download_data4.asp?no=44125";
link1[2] = "download_data4.asp?no=44127";
link1[3] = "download_data4.asp?no=44129";
link1[4] = "download_data4.asp?no=44133";


pic_title1[1] = "Vol.32 (Jan.2008)";
pic_title1[2] = "Vol.33 (Jun.2008)";
pic_title1[3] = "Vol.34 (Jan.2009)";
pic_title1[4] = "Vol.36 (Dec.2009)";

temp_pic1[1]=new Image();
temp_pic1[1].src=pic1[1];
isNext = false;

function preload1() 
{
	for (i = 2; i < pic1.length; i++) 
	{
		temp_pic1[i]=new Image();
		temp_pic1[i].src=pic1[i];
	}
}

function loadImage1(imgNum) 
{
	var obj_imgurl = document.getElementsByName('imgurl1')[0];
	
	if (imgNum >= 0) 
	{
		title1.innerHTML=pic_title1[currentImage1];
		document.imgsrc1.src=pic1[imgNum];
		obj_imgurl.href = link1[imgNum];
	}
}

function prevImage1() 
{
	currentImage1--;
	
	btn_next1.style.display = '';
	
	if (currentImage1 == 1)
	{
		currentImage1 = 1;
		btn_prev1.style.display = 'none';		
	}
		
    isNext = true;
    loadImage1(currentImage1)
}

function nextImage1() 
{
	currentImage1++;
	
	btn_prev1.style.display = '';
	
	if (currentImage1 == temp_pic1.length - 1) 
	{
		currentImage1 = temp_pic1.length - 1;
		btn_next1.style.display = 'none';
	} 
	
    isNext = true;
    loadImage1(currentImage1);
}