function checkplugin() {
	var plugin = 0;
	if(navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin){
		if(navigator.plugins && navigator.plugins["Shockwave Flash"]){
			plugin = 1;
		}
	}
	else if(navigator.userAgent && (navigator.userAgent.indexOf("MSIE") >= 0) && (navigator.userAgent.indexOf("Win") >= 0)){
		plugin = 1;
	}
	
	if(!plugin){
		location.href= "stage2.html";
	}
}

function checkjavascript() {
	var plugin = 0;
	if(navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin){
		if(navigator.plugins && navigator.plugins["Shockwave Flash"]){
			plugin = 1;
		}
	}
	else if(navigator.userAgent && (navigator.userAgent.indexOf("MSIE") >= 0) && (navigator.userAgent.indexOf("Win") >= 0)){
		plugin = 1;
	}
	
	if(!plugin){
		location.href= "stage2.html";
	}
	else
	{
		location.href= "stage1.html";
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.img) {
		site_map_over = newImage("img/site_map-over.gif");
		link_over = newImage("img/link-over.gif");
		english_over = newImage("img/english-over.gif");
		main_button01_over = newImage("img/main_button01-over.gif");
		main_button02_over = newImage("img/main_button02-over.gif");
		main_button03_over = newImage("img/main_button03-over.gif");
		main_button04_over = newImage("img/main_button04-over.gif");
		main_button05_over = newImage("img/main_button05-over.gif");
		preloadFlag = true;
	}
}