function data_change(x,y,z,a){
	/////////////////////////////////////////////////////
	now_play = "<img src='http://www.cdjournal.com/image/parts/nowload.gif'> 読み込んでいます…";
	/////////////////////////////////////////////////////
	// タブの変更
	var navi_bgcr = new Array();
	var navi_font = new Array();

	// 基本値
	for(i=0; i < 3; i++){
		navi_bgcr[i] = "#D9EEEA";
		navi_font[i] = "#000000";
	}

	//　該当箇所を変更
	if(x == "") x = 0;
	
	navi_bgcr[x] = "#CACACA";
	navi_font[x] = "#FFFFFF";

	//　処理
	document.getElementById("d_navi_a").style.backgroundColor = navi_bgcr[0];
	document.getElementById("d_navi_b").style.backgroundColor = navi_bgcr[1];
	document.getElementById("d_navi_c").style.backgroundColor = navi_bgcr[2];

	document.getElementById("d_navi_a").style.color = navi_font[0];
	document.getElementById("d_navi_b").style.color = navi_font[1];
	document.getElementById("d_navi_c").style.color = navi_font[2];

	document.getElementById("data_body").innerHTML = now_play;
	////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	// Mozilla, Firefox, Safari, IE7
	if (window.XMLHttpRequest){
		httpObject = new XMLHttpRequest();
	// IE5, IE6
	} else if (window.ActiveXObject){
		try {
			httpObject = new ActiveXObject("Msxml2.XMLHTTP"); 
		} catch(e) {
			httpObject = new ActiveXObject("Microsoft.XMLHTTP"); 
		}
	}
	///////////////////////////////////////////////	
	// サーバーからデータ到着後に実行する関数
	httpObject.onreadystatechange = display_c_change;
	///////////////////////////////////////////////	
	// HTTP非同期通信でPHPにアクセス  
	httpObject.open ("GET", z + "cdjpush/script_contents/contents_change.php?no=" + y + "&type=" + a + "&cat=" + x + "&" + (new Date).getTime(), true);
	httpObject.send (null);

}
/////////////////////////////////////////////////////
///////////////////////////////////////////////	
// data_change 表示
	function display_c_change(){
		if(httpObject.readyState == 4 && httpObject.status == 200){
			top_body_txt = decodeURIComponent(httpObject.responseText);
			
			document.getElementById("data_body").innerHTML = top_body_txt;
		}
	}