// JavaScript Document
var xmlHttp;
function getXmlHttpObject(){
	var objXMLHttp=null;
	if(window.XMLHttpRequest){
 		objXMLHttp=new XMLHttpRequest();
 	}else if(window.ActiveXObject){
 		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
 	}
 	return objXMLHttp;
}

function getContents(page_path,link_id,max_link_id,image_path){
	xmlHttp=getXmlHttpObject();
	if(xmlHttp==null){
		alert("Your browser has to be updated.");
		return;
	}else{
		var url="../"+page_path+"/"+link_id+".html";
		xmlHttp.onreadystatechange=loadContents;
		for(c=1;c<=max_link_id;c++){
			if(c==link_id){
				document.getElementById(c).className="link3_sel";
				document.getElementById('inside_main_image').innerHTML='<img src="'+image_path+'.jpg" width="261" height="147" />';
			}else{
				document.getElementById(c).className="link3";	
			}
		}
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
	}		
}
function loadContents(){
	if(xmlHttp.readyState!=4){
		document.getElementById('main_contents').innerHTML='Loading...';
	}
	if(xmlHttp.readyState==4){
		document.getElementById('main_contents').innerHTML=xmlHttp.responseText;		
	}
}

function loadContents(){
if(xmlHttp.readyState!=4){
document.getElementById('main_contents').innerHTML='Loading...';
}
if(xmlHttp.readyState==4){
document.getElementById('main_contents').innerHTML=xmlHttp.responseText;
}
}

function opacity(id, opacStart, opacEnd, millisec) {
var speed = Math.round(millisec / 100);
var timer = 0;
if(opacStart > opacEnd) {
for(i = opacStart; i >= opacEnd; i--) {
setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
timer++;
}
} else if(opacStart < opacEnd) {
for(i = opacStart; i <= opacEnd; i++)
{
setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
timer++;
}
}
}

function changeOpac(opacity, id) {
var img_object = document.getElementById(id).style;
img_object.opacity = (opacity / 100);
img_object.MozOpacity = (opacity / 100);
img_object.KhtmlOpacity = (opacity / 100);
img_object.filter = "alpha(opacity=" + opacity + ")";

}