function openMainStage( ) {
			
			var pos = "";
			var features;
		
			browser = new Object();
			
			if(navigator.appName.indexOf("Netscape") != -1) {
				browser.isNetscape = true;
			} else if (navigator.appName.indexOf("Microsoft") != -1) {
				browser.isMicrosoft = true;
			}
			
			var width = 710;
			var height = 845;
			var fixWidth = 8;
			var fixHeight = 28;
			var screenHeight = screen.availHeight-fixHeight;
			var screenWidth = screen.availWidth-fixWidth;
			
			//get position of window based on browser
			if(browser.isNetscape) {
				pos = ",screenX="+(screenWidth - width)/2+",screenY="+(screenHeight - height)/2;
			} else {
				pos = ",left="+(screenWidth - width)/2+", top="+(screenHeight - height)/2;
			}
		
			features = "width="+width+",height="+height+pos+",scrollbars=yes,resizable=yes";
			
			//open new window			
			mainwindow = window.open("simulation.html","simulation",features);
		
			if(mainwindow != null) {
				mainwindow.focus() ;
			}
	}
	
// トップページ Flash用
function topflash() {
	document.write('<object id="flacon" classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="800" height="620" align="middle">');
	document.write('<param name="allowScriptAccess" value="sameDomain" />');
	document.write('<param name="movie" value="top.swf" />');
	document.write('<param name="quality" value="high" />');
	//document.write('<param name="wmode" value="transparent" />');
	document.write('<param name="bgcolor" value="#ffffff" />');
	document.write('<embed src="top.swf" quality="high" bgcolor="#ffffff" width="800" height="620" name="flacon" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />');
	document.write('</object>');
}

// サブページ Flash用
function theflash(tgt) {
	document.write('<object id="flacon" classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="800" height="440" align="middle">');
	document.write('<param name="allowScriptAccess" value="sameDomain" />');
	document.write('<param name="movie" value="'+tgt+'" />');
	document.write('<param name="quality" value="high" />');
	document.write('<param name="bgcolor" value="#ffffff" />');
	document.write('<embed src='+tgt+' quality="high" bgcolor="#ffffff" width="800" height="440" name="flacon" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />');
	document.write('</object>');
}