var Agent = navigator.userAgent;
if (Agent.indexOf('Win') != -1) {
	if (document.all) {
		flash();	// Win_IE os = "win_ie"; osJ = "ウィンドウズ + インターネットエクスプローラー";
	} else {
		noflash();	// Win_NS os = "win_ns"; osJ = "ウィンドウズ ネットスケープ";
	}
}
if (Agent.indexOf('Mac') != -1) {
	if (document.all) {
		noflash();	// Mac_IE os = "mac_ie"; osJ = "マック インターネットエクスプローラー";
	} else {
		noflash();	// Mac_NS os = "mac_ns"; osJ = "マック ネットスケープ";
	}
}
//return os; alert(osJ);


function flash(){
var source="";
	source+="<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0 flash/swflash.cab' width=660 height=147>";
	source+="<param name='movie' value='../img_index/main_visual_1.swf'>";
	source+="<param name='quality' value='high'>";
	source+="<param name='WMODE' value='Transparent'>";
	source+="<embed src='../img_index/main_visual_1.swf' quality=high width=660 height=147 type='application/x-shockwave-flash' pluginspage='http://www.macromedia.com/go/getflashplayer'>";
	source+="</embed>";
	source+="</object>";
	document.write(source);
}

function noflash(){
var source="";
	source+="<img src='img_index/main_visual.jpg' width='660' height='147'>";
	document.write(source);
}