var xmlHttp = createXmlHttp();
//ブラウザ判定
var ua = navigator.userAgent;
var safari = ua.indexOf("Safari")!=-1;
var konqueror = ua.indexOf("Konqueror")!=-1;
var mozes = ((a=navigator.userAgent.split("Gecko/")[1])?a.split(" ")[0]:0) >= 20011128;

function readXML(xmlf, async){
	xmlHttp.open("GET", xmlf, async);
	xmlHttp.send(null);
}
function createHTML(adr){
	var xml = xmlHttp.responseXML;
	var item_node = xml.getElementsByTagName("item");
	var url_node = xml.getElementsByTagName("guid");
	var max_item = item_node.length;
	var r = parseInt(Math.random()*max_item);
	try{
		var guid = url_node[r].childNodes[0].nodeValue;
		var url = "http://youtube.com/v/"+guid.substr(guid.length-11,11)+".swf";
	}catch(e){
		var url = "http://youtube.com/v/cGgNpbFD9s4.swf";
	}
	var w = 240;
	var h = 200;

	var str = "<param name='movie' value='"+url+"'>";
		str += "</param><param name='wmode' value='transparent'>";
		str += "</param>";
		str += "<embed src='"+url+"' type='application/x-shockwave-flash' wmode='transparent' width='"+w+"' height='"+h+"'>";
		str += "</embed>";
	document.getElementById(adr).innerHTML = str;
}
function createXmlHttp(){
	xmlhttp = false;
	try{
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		MSXMLHTTP = true;
	}catch(e){
		try{
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			MSXMLHTTP = true;
		}catch(e){
			xmlhttp = false;
		}
	}
	if(!xmlhttp && typeof XMLHttpRequest != 'undefined'){
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}